Incidence of disability lasting eight days or more new cases per 1,000 personnel of the Metropolitan Life Insurance Company first six months 1967 and 1966.
D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009017:Morbidity; D009790:Occupations; D014481:United States