Social class and sex differences in admission patterns of the mentally retarded.
D000367:Age Factors; D002170:Canada; D005260:Female; D006760:Hospitalization; D006801:Humans; D008607:Intellectual Disability / Q000628:therapy*; D007360:Intelligence; D008297:Male; D012744:Sex Ratio; D012923:Social Class; D012959:Socioeconomic Factors