Reliability and validity of the work assessment scale for persons with multiple sclerosis.
Reliability and validity of the Work Assessment Scale (WAS) was done on a sample of 551 subjects with multiple sclerosis. Work was defined as those activities performed in employment, homemaking and/or personal care. The WAS has two parts consisting of: Work-Impeding (WAS-I) and Work Enhancing (WAS-E) situations and conditions. Varimax rotated factor analysis of the WAS-I resulted in a seven-factor solution containing 33 of the 53 scale items. Theta reliability coefficients for the factors ranged between .73 and .90 and test-retest correlation coefficients (n = 51) ranged between .76 and .91. Varimax rotated factor analysis of the WAS-E resulted in a five-factor solution containing 19 of the 27 scale items. Theta reliability coefficients for the factors ranged between .66 and .81 and test-retest correlation coefficients ranged between .68 and .82. Concurrent validity was shown between WAS and both ADL and Symptom subscales.
Gulick
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College of Nursing, Rutgers State University of New Jersey, Newark.
D000203:Activities of Daily Living; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001294:Attitude to Health; D005260:Female; D006225:Hand / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009068:Movement; D009103:Multiple Sclerosis / Q000503:physiopathology* / Q000523:psychology; D015203:Reproducibility of Results; D014938:Work Capacity Evaluation