Table 3 Observed and expected frequencies of days of sick leave because of pain dichotomized in up to and more than 2 weeks at the beginning (t0) as well as 6 months (t2) and 12 months (t3) after rehabilitation for both treatment conditions (per protocol analyses; IG; n = 295 above; CG; n = 288)
IG | t2 | ||||
≤ 2 weeks | > 2 weeks | % Total | |||
t0 | ≤ 2 weeks | Observed (%) | 119 (40.3%) | 28 (9.5%) | 49.8% |
Expected | 95.7 | 51.3 | |||
> 2 weeks | Observed (%) | 73 (24.7%) | 75 (25.4%) | 50.2% | |
Expected | 96.3 | 51.7 | |||
% Total | 65.1% | 34.9% | |||
IG | t3 | ||||
≤ 2 weeks | > 2 weeks | % Total | |||
t0 | ≤ 2 weeks | Observed (%) | 124 (42.0%) | 23 (7.8%) | 49.8% |
Expected | 106.1 | 40.9 | |||
> 2 weeks | Observed (%) | 89 (30.2%) | 59 (20.0%) | 50.2% | |
Expected | 106.9 | 41.1 | |||
% Total | 72.2% | 27.8% | |||
CG | t2 | ||||
≤ 2 weeks | > 2 weeks | % Total | |||
t0 | ≤ 2 weeks | Observed (%) | 116 (40.3%) | 39 (13.5%) | 53.8% |
Expected | 92.6 | 62.4 | |||
> 2 weeks | Observed (%) | 56 (19.4%) | 77 (26.7%) | 46.2% | |
Expected | 79.4 | 53.6 | |||
% Total | 59.7% | 40.3% | |||
CG | t3 | ||||
≤ 2 weeks | > 2 weeks | % Total | |||
t0 | ≤ 2 weeks | Observed (%) | 113 (39.2%) | 42 (14.6%) | 53.8% |
Expected | 93.1 | 61.9 | |||
> 2 weeks | Observed (%) | 60 (20.8%) | 73 (25.3%) | 46.2% | |
Expected | 79.9 | 53.1 | |||
% Total | 60.1% | 39.9% | |||