Table 2 Comparisons of preoperative and postoperative variables between the two groups
Variables | Younger group(n = 96) | Elderly group(n = 156) | F value/x2 | P value |
|---|---|---|---|---|
Anaesthesia type | 0.321 | 0.571 | ||
general | 76(79.2%) | 128(82.1%) | ||
spinal | 20(20.8%) | 28(17.9%) | ||
Hospital stay(d) | 9.7 ± 1.9 | 10.2 ± 2.2 | −1.73 | 0.086 |
Blood loss volume(ml) | 82.6 ± 26.4 | 81.7 ± 23.3 | 0.258 | 0.796 |
Tourniquet time(min) | 32.4 ± 3.0 | 33.1 ± 4.1 | −1.569 | 0.118 |
Operative time(min) | 82.0 ± 5.1 | 82.8 ± 4.7 | −1.374 | 0.171 |