Statistical Methods
Demographic data collected included sex, age, admission diagnosis, self-reported disabilities, health literacy, language barrier, immigrant status, education level, and reliance on family for help with activities and instrumental activity of daily living such as self-care, food preparation, medications, transportation, and attending appointments.The association between income group and post-discharge outcomes was evaluated using generalized linear mixed effects models, to allow for adjusted estimation of income group effects while accounting for site level clustering of responses via site level random intercepts. Variables included for adjustment were selected a priori based on clinical relevance and prior research. A binomial likelihood and logit link function were used, as implemented in R package lme4.