Fallis 2006.

Methods	Design: RCT Operative phase: intraoperative Withdrawals: not stated Setting: 2 acute‐care hospitals (Canada) Sample size: 62 Funding: supported by the Health Sciences Center Foundation, Winnipeg, Manitoba. Equipment was donated by Associated Health Systems Inc. (Bair Hugger devices) and Alaris Medical (IV AC thermometers)
Participants	Age (mean): 30 years Gender (M/F): 0/62 ASA grade: not stated Surgery type: elective cesarean delivery in low‐risk pregnant women Surgery duration < 2 hrs (70.6/79.5 mins) (total time in OR) Anaesthesia type: neuraxial spinal
Interventions	Intervention (ABSW): n = 32 Forced‐air warming blanket (Bair Hugger® Model 500, Arizant Healthcare, Eden Prairie, MN) Duration: following the insertion of the spinal needle and until the mother left the OR Temperature: warming unit turned on “high” (˜43°C) Body area covered: upper torso and arms Proportion covered: not stated Control: n = 30 Warmed cotton blankets Duration: following the insertion of the spinal needle and until the mother left the OR Co‐interventions: participants in both groups received IV fluids from the IV warming cupboard Room temperature: 21.6°C
Outcomes	Thermal comfort (VNRS 0 ‐ 10 scale) (reported only in narratively) Shivering (4‐point scale) (no data reported) Pain (VAS 0 ‐ 10) Other outcomes reported not included in the review: Dose of fentanyl Dose of intrathecal morphine Neonatal outcomes
Notes	Comparison 1
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Blocked randomization
Allocation concealment (selection bias)	Low risk	Sealed opaque envelopes
Blinding of participants and personnel (performance bias) All outcomes	High risk	Open‐label
Blinding of outcome assessment (detection bias) All outcomes	High risk	Open‐label
Baseline comparability of groups	Low risk	To a high extent according to Table 1
Co‐interventions equal between groups	Low risk	Yes
Incomplete outcome data (attrition bias) All outcomes	Low risk	All randomized participants were analysed
Selective reporting (reporting bias)	Unclear risk	We did not have access to the protocol, therefore we cannot exclude risk of selective reporting with the information provided
Other bias	Low risk