Table 3.
IPTW-adjusted odds ratios and mean differences for the clinical outcomes
| Outcome | IPTW analysis | |
|---|---|---|
| Estimate [95% CI] | P-value | |
| Categorical variables | Odds ratio | |
| In-hospital mortality | 0.96 [0.66–1.41] | 0.835 |
| Deep vein thrombosis | 0.98 [0.73–1.32] | 0.891 |
| Pulmonary embolism | 0.60 [0.32–1.14] | 0.117 |
| Pneumonia | 0.64 [0.44–0.94] | 0.021 |
| Urinary tract infection | 0.66 [0.48–0.90] | 0.009 |
| Delirium | 1.11 [0.73–1.65] | 0.653 |
| Decubitus ulcer | 0.63 [0.34–1.18] | 0.149 |
| Peroneal nerve palsy | 0.40 [0.10–1.61] | 0.197 |
| Continuous variables | Mean differences | |
| Length of postoperative hospital stay | 5.37 [3.56–7.19] | < 0.001 |
| Hospitalization costs (1000 JPY) | 150.38 [93.27-207.49] | < 0.001 |
IPTW Inverse probability of treatment weighting, CI confidence interval, JPY Japanese yen