Excluded articles and reason for exclusion (n = 98).
| Reasons for Exclusion | No. of Articles (%) |
|---|---|
| Non-English | 7 (7.1) |
| Not IRT analysis | 11 (11.2) |
| Mixed population groups | 12 (12.2) |
| Comments, reviews, or letters to editor | 12 (12.2) |
| Non-musculoskeletal disorders | 18 (18.4) |
| Not using the Rasch model | 38 (38.8) |
| Total | 98 |
IRT: item response theory.