Reliability and validity of the self-assessment of occupational functioning.
OBJECTIVE
Two studies examined the reliability and validity of the Self-Assessment of Occupational Functioning (SAOF), a 23-item self-assessment of perceptions of strengths, and weaknesses relative to occupational functioning, grounded in the Model of Human Occupation.


METHODS
The first study examined the test-retest reliability of the SAOF, and involved 37 college students without disabilities who completed the SAOF twice. The second study, which involved 39 young persons hospitalized with psychiatric disorders, examined internal consistency reliability of the SAOF, and examined correlations between SAOF scores and composite scores on the Self-Perception Profile, a widely used measure of perceived competence. In addition, data from both studies were combined to examine the ability of the SAOF to discriminate between the college students without disabilities and the young persons with psychiatric disorders.


RESULTS
Kappa and intraclass correlation coefficients (ICCs) were used to examine test-retest reliability and Cronbach's alpha was used to examine internal consistency. Acceptable levels of test-retest (ICCs) and internal consistency (Cronbach's alpha) reliability were found for the subscale and total scores of the SAOF. However, test-retest reliability (kappa) was lower than desirable for many of the individual SAOF items. The young persons with psychiatric disorders had lower item, subscale, and total scores on the SAOF than did the college students without disabilities. In addition, a discriminant analysis predicting group membership (college students without disability vs. young persons with psychiatric disorder) correctly classified 76.6% of the participants based on the four subscale scores of the SAOF.


CONCLUSIONS
The SAOF has the potential to be a reliable and valid clinical assessment; however, additional research is needed.
Henry
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AD
Center for Mental Health Services Research, University of Massachusetts Medical School, Worcester 01655, USA.
Baron
K B
KB
Mouradian
L
L
Curtin
C
C
D000293:Adolescent; D000328:Adult; D006233:Persons with Disabilities; D005260:Female; D006801:Humans; D008297:Male; D009788:Occupational Therapy; D009790:Occupations; D015203:Reproducibility of Results; D012649:Self Concept; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires / Q000592:standards