Table 3.
Subgroup analysis for VAS with rest at 12, 24, and 48 h
| Variables | Studies (n) | Patients (n) | P value | Incidence | ||
|---|---|---|---|---|---|---|
| MD (95% CI) | Heterogeneity P value (I2) | Model | ||||
| VAS at 12 h | ||||||
| SFNB | 4 | 376 | <0.001 | −6.88 (−8.24,−5.47) | 0.000 (86.1) | Random |
| CFNB | 1 | 33 | 0.03 | −14.4 (−27.37,−1.43) | ||
| Spinal anesthesia | 2 | 275 | <0.001 | −5.76 (−7.25,−4.27) | 0.348 (0.0) | Fixed |
| General anesthesia | 3 | 134 | <0.001 | −15.81 (−19.86,−11.77) | 0.566 (0.0) | Fixed |
| VAS at 24 h | ||||||
| SFNB | 4 | 324 | 0.002 | 2.73 (0.98,4.47) | 0.001 (86.3) | Random |
| CFNB | 3 | 239 | 0.083 | −3.91 (−8.32,0.51) | 0.938 (0.0) | Fixed |
| Spinal anesthesia | 2 | 275 | 0.145 | 5.79 (−2.01,13.59) | 0.006 (87.0) | Random |
| General anesthesia | 5 | 288 | 0.148 | −2.84 (−6.69,1.01) | 0.121 (45.2) | Fixed |
| VAS at 48 h | ||||||
| SFNB | 2 | 275 | 0.000 | −2.94 (−4.55,−1.33) | 0.545 (0.0) | Fixed |
| CFNB | 2 | 206 | 0.672 | 0.86 (−3.13,4.86) | 0.281 (14.1) | Fixed |
| Spinal anesthesia | 2 | 275 | 0.000 | −2.94 (−4.55,−1.33) | 0.545 (0.0) | Fixed |
| General anesthesia | 2 | 206 | 0.672 | 0.86 (−3.13,4.86) | 0.281 (14.1) | Fixed |
SFNB single femoral nerve block, CFNB continuous femoral nerve block, VAS visual analogue scale, MD mean difference