eTable 7. Outcome quality of postoperative pain therapy by structural and process variables: models I for the two quantitative parameters of outcome quality for all four operations combined. adjusted for patient characteristics and hospitals.
| Potential explanatory variable | Pain intensity OR [95% CI] (p-value) |
Satisfaction OR [95% CI] (p-value) |
| Structural variables | ||
| Number of beds | (0.197*1, *2) N = 10 881 |
(0.035*1, *2) N = 9471 |
| Ownership (Ref. confessional) |
(0.005*2) N = 10 809 |
(0.050*2) N = 8403 |
| – Communal | −0.71 [−1.32; –0.11] (0.021) |
0.59 [–0.04; 1.22] (0.067) |
| – Private | −0.51 [−1.04; –0.02] (0.059) |
0.53 [–0.02; 1.08] (0.059) |
| – Communal and private | −2.09 [−3.49; –0.69] (0.003) |
1.36 [–0.14; 2.86] (0.075) |
| – Federal state | 0.52 [−0.46; 1.51] (0.298) |
–0.61 [−1.64; 0.43] (0.251) |
| – Other | −0.59 [−1.70; 0.52] (0.299) |
0.36 [–0.79; 1.51] (0.538) |
| Level of care (Ref. standard care) |
(0.008*2) N = 10 505 |
(0.001*2) N = 9109 |
| – Specialized center | 0.47 [0.13; 0.81] (0.007) |
–0.49 [–0.84; –0.14] (0.007) |
| – University hospital | 1.25 [0.39; 2.11] (0.005) |
–1.38 [–2.28; –0.49] (0.002) |
| – Maximum care (other than university hospital) | 0.31 [−0.15; 0.76] (0.183) |
–0.76 [–1.23; –0.29] (0.001) |
| – Other | 0.02 [−0.66; 0.69] (0.961) |
0.21 [−0.49; 0.90] (0.562) |
| Process variables | ||
| Pain documentation (Ref. no) |
−0.35 [−0.57; –0.12] (0.002) N = 9280 |
0.94 [0.71; 1.17] (< 0.0001) N = 7959 |
| Information about postoperative pain therapy. perceived by patient*3 (Ref. no) |
−0.70 [−0.87; –0.53] (< 0.0001) N = 11 136 |
1.19 [0.98; 1.40] (< 0.0001) N = 9665 |
1 ß > 0 indicates lower outcome quality in units of the parameter ranging from no pain (0) to worst imaginable pain (10);
2 ß < 0 indicates lower outcome quality in units of the parameter ranging from 0 = completely unsatisfied (0) to absolutely satisfied (15)
*1Was modeled both as a quantitative (linear) and as a categorical parameter; *2global effect for categorical modeling; *3 “Were you informed about the various options for postoperative pain therapy in your case?”
OR, odds ratio; Ref., reference category; 95% CI, 95% confidence interval