Quality identifiers reported for Rasch articles (n = 114).
| No. of Articles (%) | ||||
|---|---|---|---|---|
| All yrs (n = 114) | Before 2006 (n = 40) | From 2006 (n = 74) | ||
| 1. | Software for Rasch analysis | |||
| Winsteps/Bigsteps | 48 (42.1) | 27 (67.5) | 22 (29.7) | |
| RUMM | 46 (40.4) | 5 (5.0) | 44 (59.5) | |
| ConQuest | 2 (1.8) | — | 2 (2.7) | |
| Winsteps and RUMM | 1 (0.9) | — | — | |
| Not stated | 17 (14.9) | 11 (27.5) | 6 (8.1) | |
| 2. | Mathematical deviation of Rasch model | |||
| Dichotomous item response | 23 | 9 | 14 | |
| Polytomous item response | 93 | 32 | 61 | |
| Rating Scale | 14 (15.1) | 2 (6.3) | 12 (19.7) | |
| Partial Credit Model | 33 (35.5) | 6 (18.8) | 27 (44.3) | |
| Both | 2 (2.2) | — | 2 (3.2) | |
| Not stated | 44 (47.3) | 24 (75.0) | 20 (32.8) | |
| Rationale of choosing model stated | 29 (31.2) | 6 (18.8) | 23 (37.7) | |
| 3. | Threshold order For polytomous item response (n = 93) | 50 (53.8) | 8 (25.0) | 42 (68.9) |
| 4. | Item fit | 111 (97.4) | 39 (97.5) | 72 (97.3) |
| 5. | Person fit | 44 (38.6) | 7 (17.5) | 37 (50.0) |
| 6. | DIF | 66 (57.9) | 12 (30.0) | 54 (73.0) |
| 7. | Reliability (PIS) | 72 (63.2) | 14 (35.0) | 56 (78.4) |
| 8. | Response dependency | 48 (42.1) | 12 (30.0) | 36 (48.6) |
| 9. | Unidimensionality | 65 (57.0) | 9 (22.5) | 56 (75.7) |
| 10. | Transformation table | 13 (11.4) | 4 (10.0) | 9 (12.2) |
DIF: differential item functioning; PSI: person separation index.