| Friction Costs (n = 113) HR [95% CI] (p) | Human Capital Costs (n = 196) HR [95% CI] (p) | |
|---|---|---|
| Gender (female) | ns | ns |
| Age (HR/yr) | 1.08 [1.04–1.2] (0.0001) | 1.04 [1.02–1.06] (0.0001) |
| Disease duration | ns | ns |
| BASDAI (HR/point) | 1.2 [1.1–1.3] (0.04) | Not included as variable |
| BASFI (HR/point) | Not included as variable | 1.2 [1.1–1.3] (0.0001) |
| Manual profession | ns | ns |
| Country NL | 2.4 [1.3–4.5] (0.007) | 2.8 [1.2–4.7] (0.0007) |