Observational Studies invites submission of comments on Leo Breiman’s paper “Statistical Modeling: The Two Cultures” (Statistical Science, 2001, 16(3), 199-231). Breiman’s paper will be reprinted on its 20^th anniversary along with comments. The deadline for submitting comments is March 5, 2021.

The 2020 Cochran award for best paper published in Observational Studies between 2015-2019 is awarded to Giancarlo Visconti and Jose Zubizarreta for their paper “Handling Limited Overlap in Observational Studies with Cardinality Matching.” The next Cochran award will be given in 2023 for a paper published between 2020-2022.

Pre-analysis Plan for a Comparison of Matching and Black Box-based Covariate Adjustment

The Causal Impact of Bail on Case Outcomes for Indigent Defendants in New York City

Assessing the Dose-Response Relationship Between Maternal Use of Inhaled Corticosteroids Therapy and Birth Weight: A Generalized Propensity Score Approach

Cohort Restriction Based on Prior Enrollment: Examining Potential Biases in Estimating Cancer and Mortality Risk

Patient Centered Hazard Ratio Estimation Using Principal Strati cation Weights: Application to the NORCCAP Randomized Trial of Colorectal Cancer Screening

Patient Centered Hazard Ratio Estimation Using Principal Stratication Weights: Application to the NORCCAP Randomized Trial of Colorectal Cancer Screening