Table 3 Rating scale category statistics
From: Measuring self-reported ability to perform activities of daily living: a Rasch analysis
Rating scale | Frequency | 47 ADL-I items (n = 2138) | Frequency | 31 ADL-I items (n = 2098) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
Category measure | Category threshold* | Calibration threshold | Outfit MnSq | Category measure | Category threshold* | Calibration threshold | Outfit MnSq | |||
0 Unable | 9110 | − 1.75 | None | None | 1.64 | 5904 | − 2.06 | None | None | 1.36 |
1 Help/safety | 7421 | − 0.54 | 1.21 | − 0.10 | 1.10 | 6033 | − 0.66 | 1.40 | − 0.55 | 1.11 |
2 Time/effort | 20,114 | 0.44 | 0.98 | − 0.46 | 1.01 | 16,122 | 0.53 | 1.19 | − 0.46 | 0.95 |
3 Competent | 55,454 | 1.89 | 1.45 | 0.56 | 0.99 | 35,227 | 2.26 | 1.73 | 1.01 | 1.00 |