News Release

New statistical models key yield powerful insight from health care databases

Peer-Reviewed Publication

American Statistical Association

BALTIMORE, Md. (Aug. 3, 2017) -Recognizing that administrative health care databases can be a valuable, yet challenging, tool in the nation's ongoing pursuit of personalized medicine, statisticians Liangyuan Hu and Madhu Mazumdar of the Icahn School of Medicine at Mount Sinai have developed advanced statistical modeling and analytic tools that can make health care and medical data more meaningful. Hu will present their findings August 3 at the 2017 Joint Statistical Meetings (JSM) in Baltimore, Md.

The availability of large electronic health records is promising for medical discovery and efforts to develop individualized treatments. "Powerful statistical analyses and results from these records and databases can be the foundation on which informed medical questions are asked and decisions are made," notes Hu.

For example, doctors seeking to provide optimal treatment for high-risk cancer patients could consider multiple radical prostatectomy (RP) or radiotherapy (RT) modalities. But, since it is difficult to conduct randomized controlled trials that would yield quality results comparing RP to RT for long-term survival among such a high-risk group, physicians are limited to the available data that can help them make precise, customized decisions. "Therefore, finding evidence using statistical tools from large, representative national databases is crucial to inform such critical medical decisions," says Hu.

Demonstrating with a case study in chronic diseases, Hu will show challenges typically associated with drawing inferences from electronic health records and administrative databases. Limitations such as uncontrolled data collection settings, practice variation among physicians and missing data can lead to false conclusions, if not addressed properly by rigorous statistical methods. Their methods leverage machine learning and flexible models to draw valid inference using electronic health records sampled from a representative population and reflect outcome from actual clinical practice.

"In clinical prediction studies, we show that combining strengths of nonparametric algorithms and parametric models leads to the development of a data-driven and reproducible tool that will not only generate immediate public health impact, but also advance developments in statistical methodology pertaining to drawing valid and useful information from vast data sources," concludes Hu.


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About JSM 2017

JSM 2017 is the largest gathering of statisticians and data scientists in the world, taking place July 29-August 3, 2017, in Baltimore. Occurring annually since 1974, JSM is a joint effort of the American Statistical Association, International Biometric Society (ENAR and WNAR), Institute of Mathematical Statistics, Statistical Society of Canada, International Chinese Statistical Association, International Indian Statistical Association, Korean International Statistical Society, International Society for Bayesian Analysis, Royal Statistical Society and International Statistical Institute. JSM activities include oral presentations, panel sessions, poster presentations, professional development courses, an exhibit hall, a career service, society and section business meetings, committee meetings, social activities and networking opportunities.

About the American Statistical Association

The ASA is the world's largest community of statisticians and the oldest continuously operating professional science society in the United States. Its members serve in industry, government and academia in more than 90 countries, advancing research and promoting sound statistical practice to inform public policy and improve human welfare. For additional information, please visit the ASA website at

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