Table 2.
Working ability, depression, and pain scores over time: all patients and patients unable to work at baseline.
| Variable | All patients (N = 2825) | Unable to work at baseline (N = 1266) | ||
|---|---|---|---|---|
| n (%) | 95% CI | n (%) | 95% CI | |
| Patients being able to work | ||||
| Baseline | 1536 (54.8) | 53.0; 56.7 | — | — |
| 3 months | 1755 (78.2) | 76.4; 79.9 | 622 (62.0) | 58.9; 65.0 |
| 6 months | 1611 (83.8) | 82.1; 85.4 | 610 (72.7) | 69.6; 75.7 |
| LOCF | 1859 (81.3) | 79.7; 82.9 | 707 (69.2) | 66.2; 72.0 |
| IDS-C total score | mean | SD | mean | SD |
| Baseline | 39.6 | 12.2 | 42.1 | 11.9 |
| 3 months | 19.4 | 12.8 | 20.9 | 13.1 |
| 6 months | 15.4 | 12.2 | 17.2 | 13.1 |
| LOCF | 18.0 | 13.6 | 19.9 | 14.5 |
| VAS overall pain score [mm] | mean | SD | mean | SD |
| Baseline | 53.9 | 26.8 | 56.5 | 26.9 |
| 3 months | 31.7 | 25.4 | 33.3 | 25.6 |
| 6 months | 28.1 | 25.2 | 30.4 | 26.2 |
| LOCF | 30.8 | 26.4 | 33.3 | 27.4 |
CI: confidence interval; IDS: inventory of depressive symptomatology; LOCF: last observation carried forward; N: number of patients in category (percentages are based on the actual number of patients with nonmissing information at the respective visit); SD: standard deviation; VAS: visual analog scale.