Sophia R Newcomer

A primer on quantitative bias analysis with positive predictive values in research using electronic health data

Martin Kulldorff, Bruce Fireman, Stan Xu, 2019, J. Am. Medical Informatics Assoc..

Analyzing self‐controlled case series data when case confirmation rates are estimated from an internal validation sample

Christina L. Clarke, Stanley Xu, Matthew F Daley, 2018, Biometrical journal. Biometrische Zeitschrift.

Identifying subgroups of complex patients with cluster analysis.

Sophia R Newcomer, Elizabeth A Bayliss, Sophia R. Newcomer, 2011, The American journal of managed care.

White Paper on studying the safety of the childhood immunization schedule in the Vaccine Safety Datalink.

Saad B Omer, Matthew F Daley, Jo Ann Shoup, 2016, Vaccine.

Bias from outcome misclassification in immunization schedule safety research

Martin Kulldorff, Bruce Fireman, Matthew F Daley, 2018, Pharmacoepidemiology and drug safety.

A population-based cohort study of undervaccination in 8 managed care organizations across the United States.

David L McClure, Ali Rowhani-Rahbar, Eric S Weintraub, 2013, JAMA pediatrics.