Table 2 Outcome data of RCTs included in the meta-analysis
Outcome | Studies include | RR or Std.mean differance [95%CI] | P-value for statistical significance | P-value for heterogeneity | I2 test for heterogeneity |
|---|---|---|---|---|---|
Opiod consumption in the first 24 h (mg) | 12 | -2.18[−2.76,-1.61] | < 0.00001 | < 0.00001 | 87% |
VAS/NRS scores at the 1st hour | 6 | −0.80[−1.54,-0.06] | 0.03 | < 0.00001 | 88% |
VAS/NRS scores at the 6th hour | 8 | −0.64[− 0.99,-0.30] | 0.0003 | 0.03 | 58% |
VAS/NRS scores at the 12th hour | 6 | −0.16[− 0.66,0.33] | 0.51 | 0.0008 | 76% |
VAS/NRS scores at the 24th hour | 8 | −0.83[−1.78,0.12] | 0.09 | 0.00001 | 94% |
Rescue analgesia requirement(n) | 7 | 0.41 [0.25,0.66] | 0.0002 | 0.006 | 67% |
Time to first rescue analgesic (min) | 3 | 4.56 [1.89,7.22] | 0.0008 | 0.00001 | 95% |
POVN(postoperative nausea and vomiting) | 9 | 0.45 [0.20,1.00] | 0.05 | < 0.00001 | 84% |