Validity and reliability of Work Productivity and Activity Impairment among patients with axial spondyloarthritis in Singapore

ConclusionsThis study supports the content validity, construct validity, and test ‐retest reliability of the WPAI in patients with axSpA.

Source: International Journal of Rheumatic Diseases - April 13, 2020 Category: Rheumatology Authors: Jie Kie Phang, Yu Heng Kwan, Warren Fong, Chuen Seng Tan, Nai Lee Lui, Julian Thumboo, Ying Ying Leung Tags: ORIGINAL ARTICLE Source Type: research