Development and evaluation of Comprehensive Work Ability Index scales / 中华劳动卫生职业病杂志

ABSTRACT

<p><b>OBJECTIVE</b>To compile the instrument of comprehensive work ability evaluation-Comprehensive Work Ability Index (CWAI) scales.</p><p><b>METHODS</b>One hundred and ninety-eight employees were selected with the random cluster sampling method from a factory. On the basis of the work ability theory, CWAI scales, a self-rating scales on work ability, was developed according to the standardized processes of scales compilation. Item differentiation analysis, principal component analysis and factor analysis as well as intra-item reliability were used for selecting the item of CWAI scales.</p><p><b>RESULTS</b>Work ability was assessed with a comprehensive work ability index, which was a comprehensive indicator constructed on the basis of the responses to the scales. It was derived as the sum of the five items including self-rating work ability domain, physiological domain (disease, sick leave etc.), psychological domain (work satisfaction, mental state etc.), social functions dominant (social support, social flexibility etc.) and work ability prediction domain.</p><p><b>CONCLUSION</b>CWAI scales correspond with the theoretical structure. However, the reliability and validity of CWAI scales must be assessed before the formal application.</p>