Sociodemographic Variables
Chart abstraction was used to obtain the family address and then to calculate an estimate of SES disadvantage via the Area Deprivation Index (ADI), modified by the University of Wisconsin – Madison Neighborhood Atlas38. The ADI provides information regarding neighborhood SES via metrics including income, education, employment, and housing quality. The ADI has been found to predict readmission risk39,40 and mortality41. For this study, national percentiles with block group levels were used with a 1-100 scale, with higher percentiles/blocks representing higher levels of disadvantage.