Table 4.
Outcomes of tests for model fit in score level groups for patients with RA
| HAQ-DI categories | Total-score level groups | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Level 1 | Level 2 | Level 3 | d | ||||||
| LM | P | Obs. | Exp. | Obs. | Obs. | Obs. | Exp. | ||
| Rising | 2.77 | 0.25 | 0.21 | 0.22 | 0.81 | 0.77 | 1.56 | 1.51 | 0.03 |
| Walking | 7.26 | 0.03 | 0.13 | 0.16 | 0.68 | 0.62 | 1.20 | 1.22 | 0.04 |
| Dressing and grooming | 0.22 | 0.89 | 0.32 | 0.32 | 1.03 | 1.02 | 1.84 | 1.84 | 0.01 |
| Reach | 7.05 | 0.03 | 0.25 | 0.27 | 0.76 | 0.83 | 1.55 | 1.58 | 0.04 |
| Eating | 1.53 | 0.47 | 0.47 | 0.47 | 1.22 | 1.19 | 2.12 | 2.12 | 0.01 |
| Grip | 4.63 | 0.10 | 0.20 | 0.23 | 0.88 | 0.83 | 1.68 | 1.67 | 0.03 |
| Activities | 4.70 | 0.10 | 0.53 | 0.51 | 1.05 | 1.12 | 1.90 | 1.86 | 0.05 |
| Hygiene | 0.70 | 0.71 | 0.50 | 0.50 | 1.25 | 1.27 | 2.21 | 2.19 | 0.01 |
RA Rheumatoid arthritis, HAQ-DI Health Assessment Questionnaire Disability Index, LM outcome Lagrange multiplier test, Obs. Observed scores, Exp. Expected scores by the model, The observed total score is the sum score of the responses on all items, d effect size
Level 1: total scores 0–4, Level 2: total scores 5–8, Level 3: total scores 9–23