Reliability and sensitivity to change of the RAID combinations
| Combination | Reliability (ICC (95% CI)) (N=57) | Sensitivity to change (SRM (95% CI)) (N=88) |
|---|---|---|
| Seven domains by NRS (final RAID) | 0.90 (0.84 to 0.94) | 0.98 (0.96 to 1.00) |
| Six domains by NRS (without coping) | 0.91 (0.85 to 0.95) | 0.93 (0.91 to 0.95) |
| Seven domains, pain by short form 36 pain | 0.86 (0.76 to 0.92) | 0.79 (0.76 to 0.81) |
| Seven domains, sleep by MOS sleep | 0.90 (0.82 to 0.94) | 1.00 (0.98 to 1.02) |
| Seven domains, coping by questionnaire | 0.93 (0.86 to 0.97) | 1.22 (1.18 to 1.26) |
| Seven domains, function by HAQ | 0.92 (0.87 to 0.96) | 1.01 (0.99 to 1.03) |
| Seven domains, function by mHAQ | 0.80 (0.68 to 0.89) | 1.02 (0.99 to 1.05) |
The table presents the psychometric properties of some of the combinations of questions/questionnaires assessed.
HAQ, health assessment questionnaire; ICC, intraclass correlation coefficient; mHAQ, modified HAQ; MOS, medical outcome study subscale; NRS, numeric rating scale; RAID, rheumatoid arthritis impact of disease; SRM, standardised response means.