To account for confounding medical and psychiatric comorbidities that may be associated with increased mortality in the population of individuals receiving benzodiazepines, we developed propensity score weights based on the estimated probability of benzodiazepine prescription status, using covariates found to be prevalent among persons receiving benzodiazepines3; these covariates spanned sociodemographic factors, health care use variables, psychiatric comorbidities, and medication use data for more than 1000 unique prescriptions. Full details are described in the eMethods in the Supplement.
