title: Toward an interpretation of items used in field studies of mental illness.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D004812:Epidemiologic Methods; D005191:Family Characteristics; D005260:Female; D006801:Humans; D007087:Illinois; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology*; D008875:Middle Aged; D011602:Psychophysiologic Disorders / Q000453:epidemiology*; D012424:Rural Population; D012737:Sex Factors; D013315:Stress, Psychological