Lisa Weissfeld

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Lisa Anderson Weissfeld is an American biostatistician whose publications include work on the risks, prognoses, and treatment outcomes for pneumonia, sepsis, and end-of-life care; she is one of the authors of the pneumonia severity index. She has also published basic research on sparse data in meta-analysis, on multicollinearity, and on the dichotomization of ordinal data, and is one of the namesakes of the Wei–Lin–Weissfeld model in recurrent event analysis. [1] [2] She worked for many years as a professor at the University of Pittsburgh.

Contents

Education and career

Weissfeld earned a Ph.D. in 1982 at the University of Pittsburgh, with the dissertation Bounds on the Efficiencies of Commonly Used Nonparametric Statistics supervised by Sam Wieand. [3] She became a professor of biostatistics at the University of Pittsburgh in 1990. [4]

In the mid-1990s, she became one of the founders and leaders of the Risk Analysis Section of the American Statistical Association, [5] and one of its early chairs; [6] she also served as secretary–treasurer for the Committee of Presidents of Statistical Societies. [7] She left academia to become a statistical consultant in Washington, DC in 2014. [4]

Recognition

Weissfeld was elected as a Fellow of the American Statistical Association in 1999. [8]

Personal life

Weissfeld is married to Joel Weissfeld, an epidemiologist. [4]

Related Research Articles

Recurrent miscarriage or recurrent pregnancy loss (RPL) is the spontaneous loss of 2-3 pregnancies that is estimated to affect up to 5% of women. The exact number of pregnancy losses and gestational weeks used to define RPL differs among medical societies. In the majority of cases, the exact cause of pregnancy loss is unexplained despite genetic testing and a thorough evaluation. When a cause for RPL is identified, almost half are attributed to a chromosomal abnormality. RPL has been associated with several risk factors including parental and genetic factors, congenital and acquired anatomical conditions, lifestyle factors, endocrine disorders, thrombophila, immunological factors, and infections. The American Society of Reproductive Medicine recommends a thorough evaluation after 2 consecutive pregnancy losses; however, this can differ from recommendations by other medical societies. RPL evaluation can be evaluated by numerous tests and imaging studies depending on the risk factors. These range from cytogenetic studies, blood tests for clotting disorders, hormone levels, diabetes screening, thyroid function tests, sperm analysis, antibody testing, and imaging studies. Treatment is typically tailored to the relevant risk factors and test findings. RPL can have a significant impact on the psychological well-being of couples and has been associated with higher levels of depression, anxiety, and stress. Therefore, it is recommended that appropriate screening and management be considered by medical providers.  

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The pneumonia severity index (PSI) or PORT Score is a clinical prediction rule that medical practitioners can use to calculate the probability of morbidity and mortality among patients with community acquired pneumonia.

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Zhiliang Ying is a Professor of Statistics in the Department of Statistics, Columbia University. He served as co-chair of the department.

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Grace Yun Yi is a professor of the University of Western Ontario where she currently holds a Tier I Canada Research Chair in Data Science. She was a professor at the University of Waterloo, Canada, where she holds a University Research Chair in Statistical and Actuarial Science. Her research concerns event history analysis with missing data and its applications in medicine, engineering, and social science.

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Ellen Frank is a psychologist and Distinguished Professor Emeritus of Psychiatry and Distinguished Professor of Psychology at the University of Pittsburgh. She is known in the field of Psychotherapy as one of the developers of Interpersonal and Social Rhythm Therapy, which aims to treat bipolar disorder by correcting disruptions in the circadian rhythm while promoting increased regularity of daily social routines. Frank is the co-founder and Chief Scientific Officer of HealthRhythms, a company that uses mobile technology to monitor the health and mental health of clients, facilitate the detection of changes in their status, and better manage mental health conditions.

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Recurrent event analysis is a branch of survival analysis that analyzes the time until recurrences occur, such as recurrences of traits or diseases. Recurrent events are often analyzed in social sciences and medical studies, for example recurring infections, depressions or cancer recurrences. Recurrent event analysis attempts to answer certain questions, such as: how many recurrences occur on average within a certain time interval? Which factors are associated with a higher or lower risk of recurrence?

Robert L. Strawderman is an academic biostatistician and researcher who holds the Donald M. Foster, MD Distinguished Professorship in Biostatistics at the University of Rochester. He has served as chair of the Department of Biostatistics and Computational Biology since 2012. Strawderman's principal research interests include semiparametric methods for missing and censored data and statistical learning methods for risk and outcome prediction. Contributions in numerous other areas include inference and variable selection in the areas of dynamic treatment regimes and causal inference in mediation analysis and for recurrent events.

<span class="mw-page-title-main">Danyu Lin</span> Chinese-American biostatistician

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References

  1. Li, Qian H.; Lagakos, Stephen W. (April 1997), "Use of The Wei–Lin–Weissfeld method for the analysis of a recurring and a terminating event", Statistics in Medicine, 16 (8): 925–940, doi:10.1002/(sici)1097-0258(19970430)16:8<925::aid-sim545>3.0.co;2-2, PMID   9160489
  2. Metcalfe, Chris; Thompson, Simon G. (April 2007), "Wei, Lin and Weissfeld's marginal analysis of multivariate failure time data: should it be applied to a recurrent events outcome?", Statistical Methods in Medical Research, 16 (2): 103–122, doi:10.1177/0962280206071926, hdl: 1983/0c15aeee-0913-4eca-a5cc-05e7211e2f53 , PMID   17484295
  3. Lisa Weissfeld at the Mathematics Genealogy Project
  4. 1 2 3 "Weissfelds say goodbye to Pitt" (PDF), Epidemiology Newsletter, p. 2, March 2015, retrieved 2023-04-24
  5. "History", Risk Analysis Section, American Statistical Association, retrieved 2023-04-24
  6. "Section officers, 1997", Risk Analysis Section, American Statistical Association, retrieved 2023-04-24
  7. "Library", Committee of Presidents of Statistical Societies, American Statistical Association, retrieved 2023-04-24
  8. Fellows, American Statistical Association, retrieved 2023-04-24