We sought to evaluate the effects of an employer-sponsored digital digestive care program on health care spending. Study Design: Retrospective controlled cohort study. Methods: Using propensity score ...

This is a preview. Log in through your library . Abstract Cluster randomization trials with relatively few clusters have been widely used in recent years for evaluation of health-care strategies. On ...

Matched sampling is a standard technique for controlling bias in observational studies due to specific covariates. Since Rosenbaum & Rubin (1983), multivariate matching methods based on estimated ...