Balance of variables in patients on H2 blockers in the STRIDE dataset.

PPI exposure and control groups for patients with gastroesophageal reflux disease (GERD) are balanced across a number of basic covariates. Importantly, the use of clopidogrel is equally balanced across exposed and control groups. Continuous variables (no. of unique disease mentions, no. unique drug mentions, length of observation) are binned according to their distributions. Before matching, H2 blocker patients tend to be sicker, have more diseases and more drugs mentioned in their record. After matching, these variables are mostly balanced.Balance of variables in patients on H2 blockers in the STRIDE dataset.