| Dg. | WPAI-SHP component | Baseline | 12 months | Mean change after 12 months | Number of assessed patients | P-value* |
|---|---|---|---|---|---|---|
| RA | Absenteeism | 12.8 (27.9) | 5.1 (18.5) | 7.7 (30.3) | 203 | <0.001 |
| Presenteeism | 52.1 (21.9) | 27.6 (20.9) | 24.5 (26.3) | 183 | <0.001 | |
| Overall work impairment | 53.9 (22.8) | 28.7 (22.0) | 25.2 (26.9) | 183 | <0.001 | |
| Activity impairment | 62.4 (21.4) | 36.0 (23.0) | 26.4 (27.7) | 352 | <0.001 | |
| AS | Absenteeism | 10.6 (25.6) | 3.5 (15.8) | 7.1 (28.0) | 307 | <0.001 |
| Presenteeism | 53.1 (22.2) | 21.1 (18.0) | 32.0 (24.9) | 282 | <0.001 | |
| Overall work impairment | 54.8 (22.6) | 21.8 (18.8) | 33.0 (25.5) | 281 | <0.001 | |
| Activity impairment | 60.7 (22.1) | 27.3 (21.4) | 33.5 (26.4) | 442 | <0.001 | |
| PSA | Absenteeism | 5.7 (17.3) | 4.2 (18.4) | 1.5 (24.6) | 90 | 0.135 |
| Presenteeism | 43.9 (24.0) | 15.3 (16.2) | 28.6 (24.5) | 84 | <0.001 | |
| Overall work impairment | 45.2 (25.0) | 15.9 (16.8) | 29.3 (25.1) | 84 | <0.001 | |
| Activity impairment | 57.4 (24.6) | 26.2 (21.3) | 31.2 (26.5) | 133 | <0.001 | |
†N = Number of assessed patients. Values are mean % (SD). *Wilcoxon paired test for difference between baseline and 12 months within each WPAI score.