Table 4.
GRADE evidence profile for postoperative nausea and vomiting (PONV) incidence and patient satisfaction.
| Quality assessment | No. of patients | Effect | Quality | Importance | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of studies | Design | Risk of bias | Inconsistency | Indirectness | Imprecision | Other considerations | TAP | Wl | Absolute (95% CI) | |||
| Postoperative nausea and vomiting (PONV) incidence | ||||||||||||
| 4 | Randomized trials | No serious | No serious inconsistency | No serious indirectness | No serious imprecision | None | 36/141 (25.5%) | 36/139 (25.9%) | RR 0.97 (0.66 to 1.43) | 8 fewer per 1000 (from 88 fewer to 111 more) | High | Important |
| 27% | 8 fewer per 1000 (from 92 fewer to 116 more) | |||||||||||
| Patient satisfaction (better indicated by lower values) | ||||||||||||
| 3 | Randomized trials | No serious | No serious inconsistency | No serious indirectness | No serious imprecision | None | 107 | 105 | — | MD 1.27 higher (0.22 to 2.32 higher) | High | Critical |