- Differences in mechanical power calculations among different conditions.
| Parameters | Difference (95% CI) | Standard deviation | P-values |
|---|---|---|---|
| T1-T3 | -1.2 (-1.5 - -0.91)† | 1.246 | <0.001* |
| T1-T2 | -0.65 (-0.9 - -0.54)‡ | <0.001** | |
| T5-T4 | -0.58 (-0.86 - -0.3)‡ | <0.001** |
↵* Dependent samples t test,
↵** Wilcoxon test:
↵† mean difference (95% confidence interval [CI]),
↵‡ median difference (95% CI).
T1: 15th minute in the supine position, T2: 15th minute into the first prone position, T3: at the first hour in the prone position, T4: at the conclusion of the surgery in the final prone position, T5: in the final supine position, 15 minutes after return