Translation and validation of the Chinese Social Role Participation Questionnaire in patients with ankylosing spondylitis.

Social Role Participation Questionnaire (SRPQ) is used to evaluate the social participation with ankylosing spondylitis (AS). Although the SRPQ has English and Dutch versions, there is no Chinese version even though China has the largest population of patients with AS. The objective of our study was to translate the SRPQ into Chinese version and assess its reliability and validity in Chinese patients with AS. The C-SRPQ was developed in a five-step translation and cross-cultural adaptation procedure. A total of 105 patients with AS were recruited during the time from September 2014 to June 2017. The intraclass correlation coefficient (ICC), Cronbach's alpha (α), and Spearman correlation coefficient (r) were used to evaluate test-retest reliability, internal consistency reliability, and the construct validity of C-SRPQ, respectively. All of the 105 patients with AS successfully completed the questionnaires. Ninety-eight patients (93.33%) participated in at least nine roles for satisfaction dimensions. No floor or ceiling effects were checked. The high value of ICC (> 0.8, 0.831-0.895) indicated the excellent test-retest reliability. In internal consistency reliability, most of Cronbach's alpha coefficient was strong (α ≥ 0.7, 0.534-0.962). In construct validity, more than half of the correlations between the dimensions of C-SRPQ and other questionnaires were good (r > 0.6). The correlations between all dimensions of C-SRPQ and BASDAI, BASFI, and ASQoL were strong negative (P < 0.01). There was a strong positive correlation (P < 0.01) between all dimensions of C-SRPQ and SF-36 physical component score (SF-36PCS), SF-36 mental component role score (SF-36MCS). The C-SRPQ is a reliable and valid questionnaire to evaluate the social participation in Chinese patients with AS.