Turgut 2007.

Methods	Parallel‐group randomized trial, conducted in Turkey. Study dates not reported.
Participants	102 women aged 40 ‐ 65 years, with no previous experience of acupressure bands, undergoing elective gynaecological surgery (total abdominal hysterectomy and bilateral salpingo‐oophorectomy). 1 participant in acupressure group and 1 in sham group withdrew because of swelling and erythema in treated hand and protocol violation respectively. Exclusion criteria: obesity (BMI > 30), diabetes, history of motion sickness, PONV, or smoking.
Interventions	Acupressure group: wristband with plastic bead positioned at P6 point on both wrists, 30 min before induction of general anaesthesia. Wristbands left on for 24 h (n = 51). Sham group: wristband with plastic bead positioned at non‐acupoint site on the dorsal surface of both forearms, 30 min before induction of general anaesthesia. Wristbands left on for 24 h (n = 51). Both groups were educated on the use of participant‐controlled analgesia before surgery. Participants received participant‐controlled analgesia containing morphine in the postanaesthetic care room, and continued for 24 h.
Outcomes	Nausea (0 ‐ 24 h), vomiting (0 ‐ 24 h), rescue antiemetic drug use, adverse effects of wristbands.
Notes	Risks of nausea and vomiting on arrival in recovery room reported. No adverse effects or complications were observed due to acupressure wristbands, except for 1 participant in the acupressure group who withdrew due to swelling and erythema of the treated hand. Rescue antiemetic was metoclopramide 10 mg IV. No details about funding source or any declarations of interest among authors.
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	Low risk	Authors took adequate steps to make interventions appear similar.
Blinding of healthcare providers (performance bias) All outcomes	Low risk	"The anaesthesiologists caring for the patients were not aware of group assignment".
Blinding of outcome assessor (detection bias) All outcomes	Low risk	"The study was observer‐blinded".
Incomplete outcome data (attrition bias) All outcomes	Low risk	Reasons for withdrawal given. No missing data reported for 100 participants analysed.
Selective reporting (reporting bias)	Low risk	All expected outcomes reported.
Other bias	Low risk	"Patients of both groups were comparable with regard to age, weight, height, ASA physical status and duration of surgery".