Table 2.
Predictors of the ASQoL score at baseline
| Baseline variable | Model 1 (n = 886), coefficient (95% CI) | Model 2 (n = 796), coefficient (95% CI) |
|---|---|---|
| Constant | 0.88 (−0.17, 1.93) | −0.88 (−1.94, 0.18) |
| BASDAI | 0.85 ( 0.72, 0.99) | 0.54 ( 0.39, 0.68) |
| BASFI | 1.00 ( 0.87, 1.13) | 0.91 ( 0.78, 1.04) |
| BASMI | −0.13 (−0.26, −0.00) | −0.10 (−0.23, 0.03) |
| Age (years) | ||
| <30 | 0 | 0 |
| 30–39 | −0.34 (−1.18, 0.50) | −0.05 (−0.85, 0.76) |
| 40–49 | −1.10 (−1.93, −0.28) | −0.64 (−1.43, 0.15) |
| 50–59 | −1.55 (−2.40, −0.71) | −1.07 (−1.88, −0.25) |
| 60–69 | −1.71 (−2.63, −0.79) | −0.76 (−1.66, 0.13) |
| ≥70 | −2.20 (−3.21, −1.19) | −1.31 (−2.31, −0.31) |
| Gender | ||
| Male | 0 | 0 |
| Female | 0.74 (0.33, 1.16) | 0.58 ( 0.16, 0.99) |
| Index of Multiple Deprivation (quintiles) | ||
| 1 (highest deprivation) | 0 | 0 |
| 2 | −0.14 (−0.85, 0.57) | 0.03 (−0.68, 0.74) |
| 3 | −0.14 (−0.84, 0.55) | 0.11 (−0.60, 0.82) |
| 4 | −0.24 (−0.90, 0.42) | −0.09 (−0.76, 0.58) |
| 5 | −0.34 (−1.02, 0.34) | −0.15 (−0.84, 0.55) |
| Management | ||
| Biologic therapy | 0.11 (−0.33, 0.56) | −0.01 (−0.45, 0.43) |
| Smoking status | ||
| Never | 0 | 0 |
| Ex-smoker | 0.05 (−0.37, 0.47) | 0.05 (−0.36, 0.46) |
| Current | 0.94 ( 0.38, 1.49) | 0.97 ( 0.42, 1.52) |
| FM | 1.42 ( 0.88, 1.96) | Not entered |
| FM | Not entered | |
| WPI | 0.09 (0.02, 0.16) | |
| SSS | 0.50 (0.41, 0.59) | |
Model 1 fit: R2 = 0.7467; model 2 fit: R2 = 0.7821.