The ABCD study is a new and ongoing project of very substantial size and scale involving
21 data acquisition sites. It aims to recruit 11,500 children and follow them for ten years with …

The evolving nature of the opioid epidemic and continued increases in overdose deaths
highlight a need for fundamental change in the collection and use of surveillance data to link …

Background Multimorbidity–having two or more coexisting chronic conditions–is highly
prevalent, costly, and disabling to older adults. Questions remain regarding chronic …

Covariate balance is crucial for unconfounded descriptive or causal comparisons. However,
lack of balance is common in observational studies. This article considers weighting …

Objectives To model the steps involved in preparing for and carrying out propensity score
analyses by providing step‐by‐step guidance and Stata code applied to an empirical …

Propensity score analysis is often used to address selection bias in program evaluation with
observational data. However, a recent study suggested that propensity score matching may …

ABCD is a longitudinal, observational study of US children, ages 9-10 at baseline, recruited
at random from the household populations in defined catchment areas for each of 21 study …

The inpatient burden of dysphagia has primarily been evaluated in patients with stroke. It is
unclear whether dysphagia, irrespective of cause, is associated with worse clinical …

Fully updated to reflect the most recent changes in the field, the Second Edition of
Propensity Score Analysis provides an accessible, systematic review of the origins, history …

The premise that unintended childbearing has significant negative effects on the behavior of
mothers and on the health of infants strongly influences public health policy and much of …