Clinical measurement.
To adapt the original JPBA-S to a Turkish version (TUR-JPBA-S) and to investigate its reliability in assessing patients with rheumatoid arthritis (RA).
Twenty-two participants with RA and 21 healthy people were videotaped while performing tasks listed in the TUR-JPBA-S. Two raters scored the video recordings for to evaluate inter-rater reliability. One rater re-analyzed the recordings at a different time point for intra-rater reliability. Participants with RA were asked to perform the same tasks after three to four weeks which was also recorded to evaluate test-retest reliability.
Internal consistency (Cronbach's α value) was found to be high (0.89) for participants with RA. Our results demonstrate excellent intra-rater (ICC: 0.99, SEM 1.2) inter-rater (ICC: 0.99, SEM 1.7) reliability, apart from excellent test-retest reliability (ICC: 0.96).
Level 2.
The TUR-JPBA-S is a valid and reliable instrument for assessing JP behavior in patients with RA in Turkey.