Yang 1993.
Methods | Parallel‐group randomized trial, conducted in Taiwan. Study dates not reported. | |
Participants | 120 women undergoing gynaecological laparoscopy. | |
Interventions | Group 1: acupuncture group included participants given an injection of 0.2 mL 50% glucose in water into P6 acupoint before extubation (n = 40). Group 2: antiemetic group was droperidol 20 ug/kg IV on induction of anaesthesia (n = 40). Group 3: no treatment (n = 40). |
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Outcomes | Vomiting (0 ‐ 3 h), side effects of acupuncture. | |
Notes | Reference group received no treatment and was not included in data analysis. Pain at acupoint site noted. No details about funding source or any declarations of interest among authors. |
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Risk of bias | ||
Bias | Authors' judgement | Support for judgement |
Random sequence generation (selection bias) | Unclear risk | Insufficient information. |
Allocation concealment (selection bias) | Unclear risk | Insufficient information. |
Blinding of patients (performance bias) All outcomes | Unclear risk | Insufficient information. |
Blinding of healthcare providers (performance bias) All outcomes | Unclear risk | Insufficient information. |
Blinding of outcome assessor (detection bias) All outcomes | Unclear risk | Insufficient information. |
Incomplete outcome data (attrition bias) All outcomes | Low risk | No missing data recorded for 120 participants analysed. |
Selective reporting (reporting bias) | High risk | Nausea was not reported. |
Other bias | Low risk | Baseline characteristics were comparable. "There was no statistically significant differences in age, weight, duration of anesthesia or amount of fluid given among the three groups of patients". |