Social differentials in selected work-limiting chronic conditions.
D000367:Age Factors; D002908:Chronic Disease / Q000453:epidemiology*; D004493:Education; D005191:Family Characteristics; D006801:Humans; D009790:Occupations; D044469:Racial Groups; D012424:Rural Population; D012737:Sex Factors; D012959:Socioeconomic Factors; D014481:United States; D014505:Urban Population