Outcome | Studies | Overall effects | Heterogeneity | |||
---|---|---|---|---|---|---|
Effect estimate | 95% CI | P value | I2 (%) | P value | ||
VAS with rest at 24 h | ||||||
low speed | 2 | −5.91 | −11.00, −0.82 | 0.000 | 0.0 | 0.579 |
high speed | 3 | −17.78 | −21.54, −14.02 | <0.001 | 9.9 | 0.330 |
ropivacaine | 3 | −15.00 | −18.32, −11.68 | 0.000 | 80.7 | 0.006 |
bupivacaine | 2 | −6.74 | −14.06, −0.59 | 0.072 | 38.2 | 0.203 |
VAS with rest at 48 h | ||||||
low speed | 2 | −3.36 | −8.11, 1.38 | 0.165 | 0.0 | 0.843 |
high speed | 3 | −17.79 | −20.59, −14.98 | 0.000 | 56.5 | 0.100 |
ropivacaine | 3 | −15.22 | −17.78, −12.66 | 0.000 | 91.5 | 0.000 |
bupivacaine | 3 | −4.82 | −12.02, 2.38 | 0.189 | 0.0 | 0.614 |