PATIENTS AND METHODS: We used instrumental variable analysis (IVA) and propensity scores (PS) to simulate the conditions of a randomized trial in a retrospective cohort of patients over age 65 from ...
Medical Care, Vol. 45, No. 10, Supplement 2: Comparative Effectiveness and Safety: Emerging Methods (Oct., 2007), pp. S143-S148 (6 pages) Background: In observational research, propensity score ...
The department of Epidemiology and Biostatistics at Dornsife presents Nandita Mitra, PhD, professor of Biostatistics in the department of Biostatistics at University of Pennsylvania. Bias due to ...
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