Table 3.
Stratified analysis using 75 years as the grouping threshold
| Variables | Age ≤ 75 | Age > 75 | ||
|---|---|---|---|---|
| OR (95% CI) | P value | OR (95% CI) | P value | |
| BUN | 0.988 (0.962–1.014) | 0.355 | 0.993 (0.961–1.025) | 0.648 |
| Creatinine | 0.823 (0.573–1.182) | 0.291 | 1.021 (0.602–1.731) | 0.938 |
| Gender | ||||
| Male | Reference | Reference | ||
| Female | 0.793 (0.541–1.161) | 0.232 | 0.624 (0.356–1.096) | 0.101 |
| Race | ||||
| White | Reference | Reference | ||
| Other | 1.058 (0.674–1.661) | 0.806 | 1.489 (0.761–2.913) | 0.245 |
| Type of HA surgery | ||||
| Total HA | Reference | Reference | ||
| Partial HA | 0.171 (0.098–0.300) | <0.001 | 0.296 (0.172–0.510) | <0.001 |
| Lorazepam | ||||
| No | Reference | Reference | ||
| Yes | 1.816 (1.185–2.783) | 0.006 | 0.843 (0.403–1.761) | 0.649 |
| Anxiety | ||||
| No | Reference | Reference | ||
| Yes | 1.787 (1.020–3.129) | 0.042 | 0.273 (0.058–1.293) | 0.102 |
BUN, blood urea nitrogen; CI, confidence interval; HA, hip arthroplasty; OR, odds ratio.