Table 1.
Baseline Characteristics of eligible patients#.
| Parameters | CFNB (N = 140) | PCIA (N = 140) | P value |
|---|---|---|---|
| Age | 66.81 ± 9.41 | 68.03 ± 11.17 | 0.323 |
| Height (cm) | 158.20 ± 7.69 | 159.41 ± 9.39 | 0.240 |
| Weight (kg) | 62.99 ± 8.38 | 63.17 ± 7.35 | 0.847 |
| WOMAC scores for knee | 53 (51–56) | 54 (51–56) | 0.212△ |
| Surgical time (min) | 87.21 ± 34.23 | 82.37 ± 30.95 | 0.216 |
| Anesthesia time (min) | 125.69 ± 32.62 | 121.08 ± 32.30 | 0.235 |
| Blood loss (mL) | 89.72 ± 93.49 | 88.89 ± 86.27 | 0.939 |
| Tourniquet time (min) | 60.41 ± 29.24 | 56.80 ± 26.92 | 0.284 |
| Gender | |||
| Male/female | 38/102 | 49/91 | 0.156△ |
| American Society of Anesthesiologists (ASA) Grading▲ | |||
| 1 | 19 | 25 | |
| 2 | 59 | 49 | 0.990∗ |
| 3 | 62 | 66 |
#Continuous variables were described as mean ± SD, categorical variables as number of events (n); *Kruskal-Wallis test was used; △Chi square test was used; ▲Wilcoxon rank test was used.
The rest of parameters were compared using independent t-test; statistical significance was considered when P value <0.05.