Infant mortality rates: socioeconomic factors. United States.
D000328:Adult; D000367:Age Factors; D001724:Birth Weight; D004522:Educational Status; D005260:Female; D006801:Humans; D007182:Income; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D010290:Parents; D012111:Residence Characteristics; D012959:Socioeconomic Factors; D013223:Statistics as Topic; D014481:United States