Journal article

Validity of the Workers Productivity and Activity Impairment Questionnaire: Specific Health Problem (WPAI:SHP) in patients with systemic sclerosis

K Morrisroe, W Stevens, M Huq, J Sahhar, G-S Ngian, J Zochling, J Roddy, SM Proudman, M Nikpour

CLINICAL AND EXPERIMENTAL RHEUMATOLOGY | CLINICAL & EXPER RHEUMATOLOGY | Published : 2017

Abstract

OBJECTIVES: To evaluate the construct validity of the Workers Productivity and Impairment Activity Index: Specific Health Problem (WPAI:SHP) in Australian systemic sclerosis (SSc) patients. METHODS: SSc patients, identified through the Australian Scleroderma Cohort Study database, completed the WPAI:SHP and a quality of life instrument (PROMIS-29) cross-sectionally. The construct validity of the WPAI:SHP was assessed by the correlations between the WPAI:SHP and a range of SSc health states. Non-parametric correlation, including Spearman's correlation (ρ), was used to test the validity of WPAI:SHP and ability to distinguish between different health states. RESULTS: A total of 476 completed qu..

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