Table 5 Association between waiting time and the change in SF-12v2 mental component scale from baseline to the 6-month follow-up, for the overall sample and by main rheumatic condition
|  | MCS at baseline, Mean (SD) | MCS at 6 months, Mean (SD) | GEE models | |||
|---|---|---|---|---|---|---|
Unadj. p value a | Unadj. change from baseline to 6 months, EMM (95% CI) | Adj. p value a,b | Adj. change from baseline to 6 months, EMM b (95% CI) | |||
Overall sample (n) | 3210 | 1940 | 0.000 | Â | 0.001 | Â |
 Total | 29.1 (11.4) | 31.6 (12.5) |  |  |  |  |
 < 2 months | 29.9 (11.7) | 33.5 (13.0) |  | 3.6 [2.4, 4.9] |  | 3.7 [2.3, 5.0] |
 2–6 months | 28.7 (11.5) | 30.5 (12.6) |  | 1.4 [0.4, 2.4] |  | 1.5 [0.3, 2.6] |
 > 6 months | 28.8 (11.0) | 31.0 (11.8) |  | 1.9 [1.0, 2.8] |  | 2.0 [1.0, 3.0] |
Osteoarthritis (n) | 665 | 395 | 0.112 | Â | 0.308 | Â |
 Total | 31.4 (11.3) | 33.5 (12.3) |  |  |  |  |
 < 2 months | 30.7 (11.4) | 33.7 (12.1) |  | 3.4 [0.7, 6.2] |  | 3.2 [0.3, 6.2] |
 2–6 months | 31.5 (11.9) | 33.4 (13.3) |  | 1.1 [−1.2, 3.4] |  | 1.6 [−1.3, 4.4] |
 > 6 months | 32.0 (10.6) | 33.5 (11.5) |  | 1.2 [−0.9, 3.29] |  | 1.5 [−0.8, 3.7] |
Fibromyalgia (n) | 670 | 358 | 0.021 | Â | 0.012 | Â |
 Total | 27.2 (11.0) | 29.0 (12.6) |  |  |  |  |
 < 2 months | 27.9 (10.5) | 32.7 (12.2) |  | 4.9 [1.7, 8.1] |  | 4.9 [1.5, 8.3] |
 2–6 months | 27.7 (11.8) | 28.9 (13.7) |  | 1.6 [−0.6, 3.8] |  | 0.9 [−1.1, 3.0] |
 > 6 months | 26.3 (10.5) | 27.1 (11.4) |  | 1.3 [−0.6, 3.21] |  | 1.0 [−1.0, 2.9] |