State trends in resident patients state and county mental hospital inpatient services 1971-1975.
D000293:Adolescent; D000328:Adult; D000368:Aged; D006760:Hospitalization / Q000639:trends*; D006766:Hospitals, County / Q000639:trends*; D006778:Hospitals, Psychiatric / Q000639:trends*; D006779:Hospitals, Public / Q000639:trends*; D006783:Hospitals, State / Q000639:trends*; D006801:Humans; D008875:Middle Aged