Test-retest reliability in psychiatric patients of the SF-36 health survey

Author(s): Burke, K. C., Baker, J. H., Hillis, A.

Journal/Book: Int J Meth Psychiatr Res. 1995; 5: Baffins Lane, Chichester, W Sussex, England PO19 1UD. John Wiley & Sons Ltd. 189-194.

Abstract: The objectives of this study were to examine the test-retest reliability of the SF-36 Health Survey (SF-36) among patients seen in an outpatient department of psychiatry, to develop a computer-administered version of the SF-36 and test the reliability compared to the paper version, and to examine the patient acceptability of the SF-36. At stage one, both the paper and computer version of the SF-36 were administered to 138 consecutive patients who had previously been seen in the department. At stage two, 61 patients returning within one month for a follow-up appointment completed either the paper or computer version both before and after that appointment as well as a study evaluation form. Reliability as measured by intraclass correlation coefficients is high for simultaneous administration of the paper and computerized versions. Reliability over a short interval (before and after the patient's appointment) is acceptable. Reliability over a longer interval between the two consecutive appointments (mean and median 18 days) also appears to be acceptable for both computer and paper versions. Three-quarters of the patients felt that the SF-36 could provide useful information to their physicians. Among psychiatric outpatients, the test-retest reliability of the SF-36 appears to be acceptable for use in outcome studies. The SF-36 can be administered using a computer without jeopardizing reliability. Both versions are acceptable for use with psychiatric patients.

Note: Article JD Burke, Texas A&M Univ, Hlth Sci Ctr, Dept Psychiat, 2401 S 31ST St, Temple, TX 76508 USA

Keyword(s): functional status; psychiatric status; reliability; SF-36 questionnaire; QUALITY-OF-LIFE; MEDICAL OUTCOMES; VALIDITY

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