News & Events |
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| January 14,
2013 |
|
New book by
Marlos Viana is now in print |
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A new book authored
by
Marlos
Viana, Ph.D., and Vasudevan
Lakshminarayanan, Ph.D., is now in print. Dihedral
Fourier Analysis introduces the theory
and methods necessary to study experimental
data indexed by, or associated
with, dihedral symmetries such as rotations and
reversals realized as vector fields or symbolic
sequences. Its particular relevance as a research
tool in areas such as optical and molecular biology
statistics appears when formulated within the
context of symmetry studies, which formally connects
algebraic and statistical reasoning together
in one methodology for data summary and inference.
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| December 21, 2012 |
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Study published
in the Journal of Consulting and Clinical Psychology |
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A study by Juned
Siddique, Ph.D., C.
Hendricks Brown, Ph.D., M.A., et al., was
published in the December
2012 issue of the Journal of Consulting
and Clinical Psychology.
The study examines whether there are latent
trajectory classes in response to treatment and
whether
they moderate the effects of medication versus
psychotherapy. The authors conclude that among
depressed women with moderate baseline depression
and anxiety,
medication was superior to CBT at 6 months, but
the difference was not sustained at 1 year. Among
women with severe depression, there was no significant
treatment group difference at 6 months, but CBT
was superior to medication at 1 year.
These findings are presented in the article “Comparative
Effectiveness of Medication Versus Cognitive-Behavioral
Therapy in a Randomized Controlled Trial of
Low-Income Young Minority Women With Depression” by
Siddique, Juned; Chung, Joyce Y.; Brown, C. Hendricks;
Miranda, Jeanne. |
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| November 5,
2012 |
|
Study published
in the Archives of General Psychiatry |
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A study led
by Robert
D. Gibbons, Ph.D., was published in the November
2012 issue of Archives of General Psychiatry regarding
the development
of a computerized adaptive test
(CAT) for depression: the CAT-Depression
Inventory or "CAT-DI."
* Please note
that Figure 3 in the article referenced above
should be replaced with this
image.
The paper describes how CAT based on multidimensional
item response theory can adaptively select a
small targeted set of items for each individual
from a much larger bank of test items. The paradigm
shift is from a fixed set of items with varying
measurement uncertainty to a varying number of
items with fixed measurement uncertainty. The
net result is a dramatic improvement over traditional
mental health measurement. The CAT-DI requires
an average of 12 items per patient yet maintains
a correlation of r=0.95 with the entire 400 item
bank. Using an empirically derived threshold,
sensitivity of 0.92 and specificity of 0.88 are
obtained for differentiating patients with major
depressive disorder (based on systematic DSM-IV
interview) versus non-psychiatric controls.
The production version of the CAT-DI and related
tests for anxiety and bipolar disorder (CAT-Mental
Health or CAT-MH suite of instruments) are currently
under development and should be available by
the end of 2012. More information about web-
and Windows-based versions of the CAT-MH programs
is available at Adaptive
Testing Technologies.
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| October 9, 2012 |
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Professor Robert D. Gibbons to receive the 2012 Rema Lapouse Award |
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Robert
D. Gibbons, Ph.D., Professor of Medicine and Health
Studies, and Director of the Center
for Health Statistics at the University
of Chicago, has
been chosen to receive the 2012 American
Public Health
Association’s
(APHA) Rema Lapouse Award. The Rema Lapouse
Award is granted annually to an outstanding recipient
for excellence in Psychiatric Epidemiology.
The award ceremony and lecture will be held
during a special
session at the APHA’s annual meeting in
San Francisco, California on October 29th, 2012.
As the recipient
of this year’s award, Professor Gibbons
will present the special Rema Lapouse Lecture
at
this meeting on the use of computerized adaptive
testing in psychiatric research.
Read more about this exciting news in the People News for October 2012
article of Amstat
News and in the Fall
2012 issue of the APHA Epidemiology Section Newsletter.
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| October 5, 2012 |
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Mental Health
Statistics approved as a new section of the American
Statistical
Association |
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The petition
for Mental Health Statistics (MHS) to be chartered
as a new American
Statistical Association (ASA) Section has been approved by the
ASA
Council of Sections, effective January 1,
2013.
For more information about the new section,
read the announcement on the MHS newsletter blog. |
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| October 3, 2012 |
|
The Workshop
on Quantitative Research Methods in Education, Health,
and Social Sciences begins October 5, 2012 |
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The
Workshop on Quantitative Research Methods in
Education,
Health, and Social Sciences serves as an
important venue on the University of Chicago
campus for
building an intellectual community of colleagues
who share methodological interests.
Workshop
participants meet biweekly to discuss working
papers and brainstorm solutions to methodological
problems encountered in ongoing research. Participants
include faculty members, researchers, and students
from the Social Sciences Division, Health Studies,
Statistics, Public Policy, the National Opinion
Research Center, the Consortium for Chicago
School Research, and colleagues from the University
of Illinois in Chicago.
This workshop is sponsored
by the Committee
on Education, the Center
for Health Statistics, and the National
Opinion Research
Center.
See workshop
schedule. |
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| August 23, 2012 |
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Professor Stephen
Raudenbush elected to National Academy of Sciences |
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Stephen
Raudenbush, Ed.D.,
the Lewis-Sebring Distinguished Service
Professor in the Department
of Sociology at
the University
of Chicago and Chair of the Committee
on Education, has been elected to the National
Academy of Sciences in recognition of his
continuing achievements in original research.
Election to the Academy is considered one of
the highest
honors that can be accorded a scientist or
engineer.
Professor
Raudenbush received his Ed.D. in policy
analysis and evaluation research in 1984 from
Harvard
University and was a professor
in the School of Education at the University
of Michigan from 1998 until 2005.
He joined the University of
Chicago faculty in 2005 and founded
the Committee on Education, which brings together
distinguished
faculty from several departments and schools.
The Committee collaborates closely with the University
of Chicago Urban Education Institute.
Read more about this announcement in UChicago
News.
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| August 16, 2012 |
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Professor Xiao-Li
Meng named Dean of the Graduate School
of Arts and Sciences at Harvard University |
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Xiao-Li
Meng, Ph.D., the Whipple V.N. Jones Professor
of Statistics and chair of the Department
of Statistics, has
been named Dean of the Graduate
School of Arts and Sciences (GSAS) at Harvard
University.
Professor
Meng received his Ph.D. in statistics
from Harvard in 1990. From 1991 to 2001, he was
assistant,
associate, and then full professor in the Department
of Statistics at the University
of Chicago. He
remains affiliated with the University of Chicago
as a faculty member of its Center for Health
Statistics.
As Statistics Department chair at Harvard University
since 2004, Professor Meng has overseen a dramatic
expansion of the
department,
as the number of undergraduate concentrators
has grown from a single digit to more than 70 since
2005 and the department’s core undergraduate
courses have surged in popularity.
Read more about this announcement in the Harvard
Gazette, Harvard
Magazine and GSAS
News. |
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| April 9,
2012 |
|
Professor Susan
A. Murphy joins the Center for Health Statistics |
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The Center for
Health Statistics welcomes Susan
A. Murphy, Ph.D.
Professor Murphy is the H.E.
Robbins Professor of Statistics, Professor of Psychiatry
and Research Professor at the Institute for Social Research,
University of Michigan.
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| March 26,
2012 |
|
Study published
Online First by the Archives of General Psychiatry |
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A second study
by Robert
D. Gibbons
et al. was published Online
First by the Archives of General Psychiatry on
March 5, 2012 as a companion study to the
one published last month on the
effects of antidepressant treatment on suicidal
thoughts
and behavior.
The study constitutes the first research synthesis
in this area to use complete longitudinal person-level
data
from
a large set of published and unpublished studies.
The results do not support previous findings
that antidepressants show little benefit except
for severe depression. The antidepressants fluoxetine
and venlafaxine are efficacious for major depressive
disorder in all age groups, although more so
in youths and adults compared with geriatric
patients. Baseline severity was not significantly
related to degree of treatment advantage over
placebo.
These findings are presented
in the article “Benefits
From Antidepressants: Synthesis of 6-Week Patient-Level
Outcomes From Double-blind Placebo-Controlled
Randomized Trials of Fluoxetine and Venlafaxine” by
Robert D. Gibbons, Ph.D., Kwan Hur, Ph.D., C.
Hendricks Brown, Ph.D., John M. Davis, M.D.,
and J. John Mann, M.D.
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| February 9,
2012 |
|
Subhash
Aryal receives the President’s
Award for Educational Excellence 2011 |
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|
Subhash
Aryal has received the President’s
Award for Educational Excellence 2011 from
President
Scott Ransom.
The President's Faculty Awards are intended
to
recognize and
promote
the best
and brightest faculty of the UNT
Health Science Center.
|
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| February 6,
2012 |
|
Robert D. Gibbons
interviewed by U.S. News & World Report |
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|
Robert
D. Gibbons
was interviewed by U.S.
News & World
Report about a recent study by Gibbons
et al., published Online
First by the Archives of General Psychiatry on
February 6, 2012.
The study found that antidepressant drugs such
as fluoxetine and venlafaxine decreased suicidal thoughts and behavior for
adult and
geriatric
patients.
For youths, no
significant effects of treatment on suicidal
thoughts and behavior
were found, although depression responded to
treatment. No evidence of increased suicide risk was observed
in youths receiving active medication.
These findings are presented in the article “Suicidal Thoughts and Behavior With Antidepressant Treatment:
Reanalysis of the Randomized Placebo-Controlled
Studies of Fluoxetine and Venlafaxine” by Robert D. Gibbons, Ph.D., C. Hendricks Brown,
Ph.D., Kwan Hur, Ph.D., John M. Davis, M.D.,
and J. John Mann, M.D.
|
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| October 24,
2011 |
|
Xiao-Li Meng article
featured in Journal of Computational and Graphical
Statistics |
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|
Yaming Yu and
Xiao-Li
Meng have just published an interesting
paper entitled "To
Center or Not to Center: That Is Not the Question—An
Ancillarity—Sufficiency
Interweaving Strategy (ASIS) for Boosting MCMC
Efficiency" (with
discussion and rejoinder ), which appeared in
the September
2011 issue of the Journal of Computational and
Graphical Statistics (JCGS).
The article was
selected by the Editor as the Featured Article
for the issue. There is a connection
between the article and Xiao-Li
Meng's inaugural Center for Health Statistics
lecture on "Stigler's
Law," where they state "The evolutionary
history from DA to GIS and more generally to
CIS may well be cited by a future Stephen Stigler
to advance a new Stigler’s Law: No scientific
idea is originated from a single team.” |
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| September 21,
2011 |
|
SMHR Newsletter
available as WordPress blog |
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|
The inaugural
issue of the Interest
Group on Statistics in Mental Health Research
(SMHR) Newsletter is now available in its
new WordPress blog format at http://smhr.org/newsletter/.
We hope that this collaborative format will
help the newsletter evolve into an online forum
for SMHR,
facilitating
discussion among
SMHR members. We look forward to your comments.
If
you would like to contribute to future issues
of
the newsletter,
please send
a note to Robert Gibbons at
and Naihua Duan at
. |
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| September 16,
2011 |
|
Job Posting: Statistical
Scientist |
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The Center for
Health Statistics (CHS) of the University of
Chicago is accepting applications for a non-tenure
track position for a statistician or biostatistician
interested in collaborative work and computation.
The position involves collaboration with U of
C faculty in the Department of Medicine and the
Computational Institute. Interested parties should
send a brief biosketch and CV to Brian
Roland.
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| August 5,
2011 |
|
Xiao-Li Meng
video wins one of three ASA video competition
awards |
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Professor Xiao-Li
Meng has won one of the three 2011
ASA "Promoting the Practice and Profession of Statistics" video
competition awards for Real-Life
Statistics: Your Chance for Happiness (Or Misery),
the video trailer for one of his statistics
courses.
The competition was organized
by the Public Awareness Group of the American
Statistical Association (ASA). |
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| July 28,
2011 |
|
SMHR
website up and running |
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More information
about the Interest Group on Statistics in Mental
Health Research (SMHR), its mission
statement, membership details and events is
now available at http://healthstats.org/smhr.
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| June 28,
2011 |
|
Interest Group
on Statistics in Mental Health Research (SMHR)
established |
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|
Center for Health
Statistics members
Naihua
Duan and Robert
Gibbons founded a new
Interest Group on Statistics in Mental Health
Research (SMHR). Support for the group came
from nominations by forty-one statisticians who
work in mental health research and related areas.
The Interest Group received approval from the
Council of Sections Governing Board of the American
Statistical Association (ASA), http://amstat.org/sections/sectionlist.cfm.
More information about the SMHR, its mission
statement and membership details will become
available in the near future.
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| June 2,
2011 |
|
Professor Xiao-Li
Meng joins the Center for Health Statistics |
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|
The Center for
Health Statistics welcomes Xiao-Li
Meng, Ph.D.
Professor Meng is the Whipple V.
N. Jones Professor of Statistics and Chair
of the Department of Statistics at Harvard
University.
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| May 25,
2011 |
|
Inaugural lecture
for the Center for Health Statistics |
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|
Professor Xiao-Li
Meng, Ph.D., Whipple V.N. Jones Professor
and Chair of the Department of Statistics at
Harvard University, presented "Mental
Exercises for a Mental Health Study: Is it
a Simpson’s Paradox or Stigler’s
Law?" as the inaugural lecture for the
Center for Health Statistics at the University
of Chicago.
The lecture was co-sponsored by the University
of Chicago Department
of Health Studies and
Department
of Statistics.
More information about the event |
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| May 5,
2011 |
|
Professor Li
Cai joins the Center for Health Statistics |
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|
The Center for
Health Statistics welcomes Li
Cai,
Ph.D.
Professor Cai is an Assistant Professor
of Advanced Quantitative Methodology in
the Graduate School of Education and Information
Studies and Assistant Professor of Quantitative
Psychology in the Department of Psychology
at University of California, Los Angeles
(UCLA).
|
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| May 2,
2011 |
|
In Memory of Thomas R. Ten Have |
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It is with great
sadness that we report on the death of our friend
and colleague, Tom
Ten Have. Tom was a devoted
husband, father, professor, statistical scientist,
and a beloved colleague. Tom was 50 years old.
In his distinguished career he published over
200 wonderful peer reviewed
papers that established
new trajectories for statistical research and
scientific thinking.
Tom was a fellow of the
American Statistical Association and a recipient
of the Harvard Award for Lifetime Contributions
to Psychiatric Epidemiology and Biostatistics. |
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| April 8,
2011 |
|
Professor Robert
D. Gibbons named a 2011 Pritzker Scholar |
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|
The University
of Chicago has named Professor Robert
D. Gibbons one of the Pritzker Scholars in 2011.
The
Pritzker family of Chicago, widely known philanthropists
whose many business ventures include the Hyatt
Hotel chain, made a gift of $30 million to the
University of Chicago in 2002.
The gift has been used to recruit outstanding
new faculty to the Biological Sciences Division
of
The Pritzker School of Medicine. These Pritzker
scholars form uniquely synergistic and powerful
groups of investigators. To date, there have
been 18 Pritzker Scholars.
|
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| April 6,
2011 |
|
Professor Marlos Viana invited to be an Associate Editor of JBS |
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|
Professor Marlos
Viana was recently invited to be an Associate
Editor of the
Journal
of Biological Systems (JBS) after a few years
serving on the editorial board. JBS publishes
a broad spectrum of papers in all
areas of methods/systems in biology.
|
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| April 1,
2011 |
|
Invitation to
CHPS Methods Workshop on June 2, 2011 |
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|
The Columbia
Center for Homelessness Prevention Studies and
the New York State Psychiatric Institute Division
of Biostatistics are delighted to invite you
to attend a full-day workshop June 2, 2011 10am-4pm
at the New York State Psychiatric Institute,
1051 Riverside Drive, New York City on "The
Application of Instrumental Variable Methods
in Health Services Research."
View the
agenda  Seats are limited, so please RSVP to
by April 30. We hope you will join us! |
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| March 31,
2011 |
|
Professor Stephen
Raudenbush joins the Center for Health Statistics |
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|
The Center for
Health Statistics welcomes Stephen
Raudenbush, Ed.D.
Professor Raudenbush is the
Lewis-Sebring Distinguished Service Professor
in the Department of Sociology at the University
of Chicago and Chairman of the Committee
on Education.
|
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| March 30,
2011 |
|
Professor Juned
Siddique joins the Center for Health Statistics |
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|
The Center for
Health Statistics welcomes Juned
Siddique, Ph.D.
Professor Siddique is an Assistant
Professor of Biostatistics in the Department
of Preventive Medicine at Northwestern University
Feinberg School of Medicine.
|
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| March 30,
2011 |
|
Professor Sanjib
Basu joins the Center for Health Statistics |
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|
The Center for
Health Statistics welcomes Sanjib
Basu, Ph.D.
Professor Basu is a Professor of Statistics
and Director of Graduate and Undergraduate Studies
in the
Division of Statistics at
Northern Illinois University.
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| March 29,
2011 |
|
Professor Ronald
A. Thisted joins the Center for Health Statistics |
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|
The Center for
Health Statistics welcomes Ronald
A. Thisted, Ph.D. Professor Thisted has been a faculty
member in the Department of Statistics
at the University of Chicago since 1976,
and since 1999 he has also chaired the Department
of
Health Studies, which is the home for biostatistics,
epidemiology, and health services research
at the University of Chicago.
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| March 28,
2011 |
|
Yoonsang Kim joins
the Center for Health Statistics |
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|
The Center for
Health Statistics welcomes Yoonsang
Kim.
Yoonsang is a doctoral
student in Biostatistics at the University of Illinois
at Chicago, and a Research Assistant at the UIC Institute
of
Health Research and Policy.
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| March 17,
2011 |
|
Professor Naihua Duan joins
the Center for Health Statistics |
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|
The Center for
Health Statistics welcomes Naihua Duan, Ph.D. Professor
Duan is Professor of Biostatistics (in Psychiatry)
in the Departments
of Psychiatry and Biostatistics at Columbia
University, and the Director of the
Division of Biostatistics in the New York
State Psychiatric Institute (NYSPI).
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| March 16,
2011 |
|
Professor Joel
Greenhouse joins
the Center for Health Statistics |
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|
The Center for
Health Statistics welcomes Joel
B. Greenhouse, Ph.D. Professor Greenhouse
is Professor of Statistics at Carnegie Mellon
University, and Adjunct Professor
of Psychiatry and
Epidemiology at the University of Pittsburgh.
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| March 14,
2011 |
|
Professor Sharon-Lise
Normand joins
the Center for Health Statistics |
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|
The Center for
Health Statistics welcomes Sharon-Lise
T. Normand, Ph.D. Professor Normand is
Professor of Health Care Policy (Biostatistics)
in the Department of Health Care Policy
at Harvard Medical School and Professor in
the Department of Biostatistics at the
Harvard School of Public Health.
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| March 11,
2011 |
|
Professor David
Meltzer joins the Center for Health Statistics |
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|
The Center for
Health Statistics welcomes David
O. Meltzer, MD, PhD. Professor Meltzer
is Chief of the Section of Hospital Medicine,
Director
of the
Center
for Health and the Social Sciences, and
Chair of the Committee on Clinical and
Translational Science at The University
of Chicago, where he is Associate Professor
in the Department of Medicine, Department
of Economics and the Harris School of
Public Policy Studies.
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| March 11,
2011 |
|
New version
of BIFACTOR available for download |
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|
A new version
of the BIFACTOR program is available for download.
New features and updates include the ability
to easily eliminate the item number
from
the
sub-domain
to which it belongs and rerun the program, the
scoring of sub-domains, and the removal of any previous restrictions on the number of factors,
items, sub-domains, etc.
The new version is compatible with Microsoft
Windows 2000, Windows XP and Windows 7, and can
work with previous
versions of .DEF input files, provided
that
a 0 or 1 is added to the end of the third line
of each existing .DEF
file.
Download the program |
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|
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| November 24,
2010 |
|
The Center for
Health Statistics at the University of Chicago |
| |
|
After 30 years
at the University of Illinois at Chicago (UIC), Professor
Robert D. Gibbons has retired from UIC and
joined the faculty of the University
of Chicago (U of C), where
he
is Professor of Medicine and Health
Studies and Director
of the newly founded Center for Health Statistics
(CHS) at the U of C. |
|
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|
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| July 17, 2009 |
|
American
Statistical Association announces 2009 award
recipients |
| |
|
The American
Statistical Association (ASA) announced today
the winners of its prestigious annual awards. Dr. Robert
D. Gibbons will be receiving
the Outstanding Statistical Application Award
for the development of new and innovative statistical
approaches to drug safety, and for clarifying
the relationship between antidepressant pharmacotherapy
and suicide.
Dr. Gibbons was nominated for the
Outstanding Statistical Application Award by
Dr. Donald Hedeker, UIC Professor of Epidemiology
and Biostatistics, who cited a seminal paper
by Dr. Gibbons and colleagues:
Mixed-effects
Poisson regression analysis of adverse event
reports: The relationship between antidepressants
and suicide
Robert D. Gibbons, Eisuke Segawa, George Karabatsos, Anup K. Amatya, Dulal K.
Bhaumik, C. Hendricks Brown, Kush Kapur, Sue M. Marcus, Kwan Hur, J. John Mann
Statistics in Medicine, Vol. 27, Issue 11, pp. 1814-1833, May 2008.
In his nomination, Dr. Hedeker noted that "this
paper builds on the foundational work of Dr.
Gibbons and his colleagues in the area of the
development of new and innovative statistical
approaches to Drug Safety in general and the
public health debate on the relationship between
antidepressant pharmacotherapy and suicide in
particular," which builds on work led by
Dr. Gibbons and presented in four earlier papers.
Dr. Gibbons and the other award recipients
will be honored on August 4, at the President's
Address session
of the ASA's
2009 Joint
Statistical Meetings in Washington, DC.
Read
the American
Statistical Association press release. |
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|
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| May
7,
2009 |
|
Robert
D. Gibbons to receive the 2009 Distinguished Faculty
Award from the University
of Illinois College of Medicine at Chicago |
| |
|
Dr. Robert D. Gibbons will receive
the Distinguished Faculty Award in recognition
of his outstanding achievements in a wide range
of scientific fields, which have earned
him and the university
national and international acclaim.
Dr. Gibbons' work links biostatistics,
psychiatric epidemiology, and
public policy, by developing, applying, and
explaining complex statistical theory so it can be understood
and employed in diverse
scientific disciplines, as well as in public
policy decision making.
The Distinguished Faculty
Award will be presented at
the Commencement Ceremony on May 8, 2009. |
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| October 14, 2008 |
|
SuperMix 1.1 available for download |
| |
|
SuperMix combines the functionality
of four mixed-effects programs, MIXREG, MIXOR, MIXNO, and MIXPREG,
developed by Donald Hedeker and Robert Gibbons into a single application
to provide estimates for mixed-effects regression models.
SuperMix extends the functionality available in the four Mixed-Up
Suite programs by providing advanced data handling, the ability
to reference columns by name, sophisticated import and export capability,
visualization of data and results, increased analysis speed and
additional statistical engine functions.
SuperMix has been developed by Scientific Software International
under an SBIR Phase II contract N44MH32056. The
application will fit models with continuous, count,
ordinal, nominal, and survival outcome variables
with nested data, allowing for up to three levels
of nesting. For a more in-depth
look at SuperMix and to download a free fully
functional 15-day trial edition visit the SSI
SuperMix homepage . |
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| June 2,
2008 |
|
MVPreg 1.0 available
for download |
| |
|
The MVPreg program computes a
general multivariate probit regression model
for the analysis of multivariate
binary data.
Download the program |
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|
| |
| May 21, 2008 |
|
Robert
D. Gibbons appointed to Department
of Veterans Affairs expert panel |
| |
|
Robert D. Gibbons, Director of
UIC Center for Health Statistics, has been appointed
to a nine-member national expert panel that will
provide professional opinion, interpretation,
and conclusions on information and data to the “Blue Ribbon
Work Group on Suicide Prevention in the Veterans
Population.”
The
expert panel will also make recommendations to
the work group on opportunities for improvement
in the US Department of Veterans Affair
(VA) programs.
Read
more about the work group's goals in the
VA press release. |
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|
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| May 19, 2008 |
|
Dulal
K. Bhaumik elected a 2008
Fellow of the American Statistical Association
|
| |
|
Dulal K. Bhaumik, Professor of
Biostatistics, Psychiatry and Bio-engineering
has been elected a 2008 Fellow of
the American Statistical Association (ASA) for
his outstanding contributions to the development
of Optimal Designs; Construction of Prediction
and Tolerance Limits for Environmental Data; Hypotheses
Testing for Mental Health Research; for Development
of Statistical Methodology
and Dissemination of Software for Analyzing Functional
Magnetic Resonance Imaging (fMRI) Data; Statistical
Education through outstanding teaching
and service to the profession.
From the ASA By-Laws: "By the honorary
title of Fellow the Association recognizes full
members of established reputation who have made
outstanding contributions in some aspect of statistical
work." Given annually, this is a great
honor as the numbers of recipients are limited
to no
more than 1/3 of 1% of the ASA membership. |
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|
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| April 23, 2008 |
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Subhash
Aryal receives the 2008 Haenszel Research Award |
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The Haenszel Research Award
is presented annually to an outstanding student
in the Epidemiology and Biostatistics Division.
This award is acknowledged at a special
awards ceremony, and the winner receives a voucher
for $200 to be used for travel, books, software,
or equipment relevant to their
work. The intent of this award is to foster high
quality research among Epidemiology and Biostatistics
Division students.
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| April 2, 2008 |
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Computerized adaptive testing
shown to dramatically reduce administration time and patient and
clinician burden |
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In the lead article of the April
2008 issue of Psychiatric Services, Robert D. Gibbons
et al. investigate the combination of item response
theory and computerized adaptive testing (CAT)
as a means to reduce the time
required to administer a collection of extensive,
fixed-length psychiatric instruments for mental
health measurement and diagnostic
purposes.
The methodology described in Using
Computerized Adaptive Testing to Reduce the
Burden of Mental Health Assessment streamlines
and individualizes the measurement process,
increases measurement precision and
decreases respondent and clinician burden.
The article is featured in the
issue's This
Month's Highlights and
is further discussed in the Commentary, Are
We Ready for Computerized Adaptive Testing  |
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| September 1, 2007 |
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Study connects suicidality warnings
to a decrease in SSRI prescriptions and an increase in youth suicide
rates |
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The study examines whether U.S. and
European regulatory agencies issued suicidality warnings led to a
decrease in SSRI prescriptions for children and adolescents and consequently
an increase in suicide rates as a result of untreated depression.
These findings are presented in the “Early
Evidence on the Effects of Regulators’ Suicidality Warnings on SSRI Prescriptions
and Suicide in Children and Adolescents” article by Robert D. Gibbons,
Ph.D., C. Hendricks Brown, Ph.D., Kwan Hur, Ph.D., Sue M. Marcus, Ph.D., Dulal
K. Bhaumik, Ph.D., Joëlle A. Erkens, Pharm.D., Ph.D., Ron M.C. Herings,
Pharm.D., Ph.D., and J. John Mann, M.D.
The article appears in the September
2007 issue of The American Journal of Psychiatry. |
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| July 1, 2007 |
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Study shows decline in
suicide attempts with antidepressant
treatment
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A study of 226,866 veterans diagnosed
with depression during 2003-2004 determined that
the number of suicide attempts declined once treatment
began, and that the rate of suicide
attempts was lower in depressed veterans who took
antidepressants than in those who did not.
The study
is described in the “Relationship
Between Antidepressants and Suicide Attempts: An Analysis of the Veterans Health
Administration Data Sets” article by Robert D. Gibbons, Ph.D., C.
Hendricks Brown, Ph.D., Kwan Hur, Ph.D., Sue M. Marcus, Ph.D., Dulal K. Bhaumik,
Ph.D.
and J. John Mann, M.D.
The
article appears in the July
2007 issue of The
American Journal of Psychiatry, the official journal of the American
Psychiatric Association (read
the News Release ). |
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| March 23, 2007 |
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JASA Associate Editor invitation |
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Dr. Dulal K. Bhaumik has been invited
to serve as an Associate Editor of the Journal
of the American Statistical Association (JASA) .
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| January 18, 2007 |
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BIFACTOR available for download |
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The BIFACTOR program estimates the
bifactor model for ordinal and dichotomous data.
Download
the program |
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| December 19, 2006 |
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MIXZIP 1.0 installation program available for
download |
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MIXZIP provides the maximum marginal
likelihood estimates of mixed-effects Zero-Inflated
Poisson (ZIP) regression models.
Download the
installation program |
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| November 1, 2006 |
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Study links higher county-level antidepressant
prescription rates to lower early
adolescent suicide rates |
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A county-by-county study of the entire
United States found that suicide rates among children
ages 5-14 during the period 1996-1998 were lower in counties with
higher numbers of
antidepressant pills prescribed per person.
These
findings are presented in the article "The
Relationship Between Antidepressant Prescription
Rates and Rate of Early Adolescent
Suicide" by
Robert D. Gibbons, Ph.D., Kwan Hur, Ph.D., Dulal K. Bhaumik, Ph.D., and J.
John Mann, M.D., of the Center for Health Statistics, University of Illinois
at Chicago,
and the New York State Psychiatric Institute and Columbia University College
of Physicians and Surgeons.
The
article appears in the November
2006 issue of The American Journal of Psychiatry, the official
journal of the American Psychiatric Association (read
the News Release ).
In
this same issue, Dr. Gregory E. Simon, M.D., M.P.H., of the Group Health's
Center for Health Studies compares the study's findings to those of other
randomized trials and large observational studies in the editorial "How
Can We Know Whether Antidepressants Increase Suicide Risk?"  |
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| September 25, 2006 |
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The Institute of Medicine reviews the U.S.
Drug Safety System |
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June 2005 marked the first meeting
of a committee of academic and industry experts
appointed by the Institute of Medicine to review the activities conducted
by the U.S.
Food and Drug Administration and to make recommendations
to improve risk assessment, surveillance and the safe use of drugs.
Fifteen
months later, the Assessment of the U.S. Drug
Safety System committee,
which includes Dr. Robert D. Gibbons, has published
its findings and recommendations in its report
released on September 22, 2006: The
Future of Drug Safety: Promoting and Protecting the Health of the Public.
Read
about the report's likelihood to intensify the debate over the current state
of the U.S. federal system in charge of approving and regulating drugs
and the
proposed reforms of the F.D.A. in the New York Times article: Study
Condemns F.D.A.'s Handling of Drug Safety (free registration required). |
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| September 18, 2006 |
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NIMH Awards Five-Year $3M Competitive Renewal
for Gibbons CAT Grant |
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NIMH awarded a five-year, $3 million
competitive renewal of the Mental Health Computerized
Adaptive Testing Grant to Robert D. Gibbons, Ph.D. The aim
of the investigation is to develop and evaluate computerized adaptive
testing programs
and algorithms for assessing depression.
The original
study demonstrated the feasibility of item response
theory (IRT), and computerized adaptive
testing (CAT) in the development and administration
of a large mental health rating scale. Using
an item bank of 626 mood and anxiety disorder
symptom items, the investigators found that 90%
of the items in the item bank were discriminating
of high and low levels of mood disorders,
and the bi-factor IRT model did an excellent
job of accounting for the clustering of items
within symptom domains.
The initial study also found that CAT administration
of the test
resulted in a 95% reduction in the number of
items administered to
an individual subject
(24 out of 626 items using simulated CAT and
31 items for live CAT testing), and the correlation
between the CAT
based impairment rating
and the score based on all 626 items was r=0.93.
Based on these results, the competitive renewal
proposes to use IRT and CAT to develop a
CAT Depression Inventory (CAT-DI). |
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| May 26, 2006 |
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Drs. Dulal
K. Bhaumik and Robert D.
Gibbons to receive the 2006 W. J. Youden Award |
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"Confidence
Regions for Random-Effects Calibration Curves
with Heteroscedastic Errors" by Dulal K. Bhaumik and Robert D. Gibbons, published
last year in the journal Technometrics has been declared
this year's winner of the W. J. Youden Award in Interlaboratory
Testing, from the American Statistical Association.
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| September 30, 2003 |
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Robert
Gibbons to receive Harvard Award in
Psychiatric Epidemiology & Biostatistics |
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The Biostatistics Department of the
Harvard School of Public Health today announced
that Robert Gibbons, Ph.D., will receive this year's Harvard Award
in Psychiatric Epidemiology
and Biostatistics.
The award recognizes Dr. Gibbons'
lifelong career contributions that have significantly
advanced the field of Psychiatric
Biostatistics. Dr. Gibbons will present the award
lecture at the Harvard School of Public Health
this Fall. |
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| September 30, 2003 |
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Statistical
Methods for Detection and Quantification of Environmental Contamination receives
top rating in Amstat News |
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The book Statistical Methods
for Detection and Quantification of Environmental
Contamination by Dr. Robert D. Gibbons and David E. Coleman was
included in the top five books for statisticians
in Amstat News.
Read
the review in Amstat News  |
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