The 22-item index of psychophysiological disorder: psychological or organic symptoms?
D000328:Adult; D003937:Diagnosis, Differential; D004522:Educational Status; D004812:Epidemiologic Methods; D005069:Evaluation Studies as Topic; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D011602:Psychophysiologic Disorders / Q000175:diagnosis / Q000453:epidemiology*; D012737:Sex Factors; D012923:Social Class; D013223:Statistics as Topic; D013312:Stress, Physiological; D011795:Surveys and Questionnaires; D013689:Telephone; D014481:United States