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 ...

Comparison of mortality trends in geriatric and nongeriatric patients with salivary gland tumors. This is an ASCO Meeting Abstract from the 2019 ASCO Annual Meeting I. This abstract does not include a ...

Activation of central/effector memory T cells in advanced gastric cancer patients treated with antiprogrammed death-1 antibody. This is an ASCO Meeting Abstract from the 2019 Gastrointestinal Cancers ...

Cluster randomized trials with relatively few clusters have been widely used in recent years for evaluation of health-care strategies. The balance match weighted (BMW) design, introduced in Xu and ...

The majority of recent empirical papers in operations management (OM) employ observational data to investigate the causal effects of a treatment, such as program or policy adoption. However, as ...