Table 2.
Outcome analysis
| Group | p value | |||
|---|---|---|---|---|
| retrospective without SDD (n = 68) | retrospective with SDD (n = 53) | prospective with SDD (n = 81) | ||
| Mortality [30 days postoperative] | 12 (17.6%) (10.2% - 28.5%) OR: 1 ref) |
1 (1.9%) (0.0% - 10.9%) OR: 0.09 (0.01-0.71) |
1 (1.2%) (0.0% - 7.3%) OR: 0.06 (0.01-0.46) |
<0.001 A) |
| Anastomotic Leakage |
9 (13.2%) (6.9% - 23.5%) OR: 1 ref) |
2 (3.8%) (0.3% - 13.5%) OR: 0.26 (0.05 - 1.24) |
6 (7.4%) (3.2% - 15.5%) OR: 0.52 (0.18-1.56) |
0.162 A) |
| Postoperative Pneumonia |
17 (25.0%) (16.2% - 36.5%) OR: 1 ref) |
6 (11.3%) (4.9% - 22.9%) OR: 0.38 (0.14-1.05) |
4 (4.9%) (1.6% - 12.4%) OR: 0.16 (0.05-0.49) |
0.001 A) |
| length of hospital stay [days] | 25.2 ± 18.0 | 21.8 ± 13.7 | 20.2 ± 10.9 | 0.121 B) |
n (percentage) (95% CI for percentage) Odds ratio (95% CI for Odds ratio)
A) Chi square tests for overall significance B) Kruskal Wallis tests for overall significance
Closed testing procedure with chi square tests for: Mortality Leakage Pneumonia
retrospective with SDD - retrospective without SDD p = 0.005 p = 0.072 p = 0.057
prospective with SDD - retrospective without SDD p < 0.001 p = 0.239 p < 0.001
retrospective with SDD - prospective with SDD p = 0.761 p = 0.385 p = 0.169