Table 3.
Proportion of patients who met or exceeded MCIDs at 12 months
| MCID | Overall population (N = 1570)a | Disease activity group | p valueb | |||
|---|---|---|---|---|---|---|
| Sustained remission/LDA (N = 585) | Improving remission/LDA (N = 239) | Worsening M/HDA (N = 190) | Sustained M/HDA (N = 556) | |||
| mHAQ, N = 1544 | ||||||
| % | 36.9 | 41.6 | 42.4 | 33.2 | 30.9 | 0.0004 |
| [95% CI]c | [0.3444, 0.3931] | [0.3750, 0.4572] | [0.3597, 0.4908] | [0.2640, 0.4046] | [0.2704, 0.3490] | |
| Patient pain, N = 1565 | ||||||
| % | 55.0 | 69.6 | 58.6 | 48.4 | 40.2 | < 0.0001 |
| [95% CI]c | [0.5245, 0.5744] | [0.6573, 0.7335] | [0.5209, 0.6499] | [0.4113, 0.5577] | [0.3607, 0.4439] | |
| Patient fatigue, N = 981 | ||||||
| % | 47.7 | 56.8 | 57.3 | 42.4 | 36.8 | < 0.0001 |
| [95% CI]c | [0.4454, 0.5089] | [0.5146, 0.6206] | [0.4881, 0.6557] | [0.3361, 0.5156] | [0.3185, 0.4205] | |
CI confidence interval, LDA low disease activity, MCID minimum clinically important difference, mHAQ modified Health Assessment Questionnaire, M/HDA moderate or high disease activity, VAS visual analog scale
aCounts may be reduced because of missing data for some variables (e.g., patient fatigue was not included in the Corrona RA questionnaire until October 2010)
bStatistical significance of comparisons across disease activity groups did not change after adjustment for baseline value of the corresponding outcome. Unadjusted and adjusted regression coefficients shown in Supplemental Table 2
c95% CI is shown as a proportion; the point estimate is shown as a percentage