Social and biological factors in infant mortality. IV. The independent effects of social class, region, the mother's age and her parity.
D001685:Biological Factors; D005260:Female; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D008423:Maternal Age; D009035:Mothers; D010298:Parity; D011247:Pregnancy; D012923:Social Class; D014798:Vital Statistics
D001685:Biological Factors
INFANT; MATERNITY; VITAL STATISTICS