title: The use of hospital medical records for epidemiologic research. I. Differences in hospital utilization and in-hospital mortality by age-race-sex-place of residence and socioeconomic status in a defined community population.
mesh_terms: D000293:Adolescent; D000328:Adult; D001741:Black or African American; D000367:Age Factors; D000368:Aged; D004812:Epidemiologic Methods; D005006:Ethnicity; D005260:Female; D006757:Hospital Units; D006760:Hospitalization; D006761:Hospitals / Q000706:statistics & numerical data*; D006801:Humans; D007182:Income; D008297:Male; D008499:Medical Records; D008875:Middle Aged; D009017:Morbidity; D009026:Mortality; D012106:Research; D012111:Residence Characteristics; D012189:Retrospective Studies; D012494:Sampling Studies; D012737:Sex Factors; D012959:Socioeconomic Factors; D013022:South Carolina; D013223:Statistics as Topic