Kohli 2013.

Study characteristics
Methods	RCT
Participants	80 participants Inclusion criteria: age 18‐35 years, ASA I‐II, CS under spinal anaesthesia Exclusion criteria: contraindication to central neuraxial block, chronic hypertension, multiple pregnancy, diabetes mellitus, pregnancy‐induced hypertension, BMI > 30 kg/m² Setting: India
Interventions	Mechanical compression versus control Group 1: sequential compression device used. The chambers of the device sequentially inflated from ankle to knee to a maximum pressure of 45‐50 mmHg at the ankle and 35 mmHg at the calf; the duration of compression was 12 s with a 60 s relaxation period between compressions Group 2: no sequential compression device used All women received "adequate" crystalloid preload, standardised monitoring, standardised spinal anaesthetic technique and dose. All women had SCD put on legs, but only group 1 had their SCDs turned on. Hypotension treated with 6 mg boluses of IV ephedrine.
Outcomes	Maternal: incidence of hypotension, ephedrine use No neonatal outcomes
Notes	Hypotension was defined as decrease in SBP by > 20% from baseline.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Not reported
Allocation concealment (selection bias)	Unclear risk	Not reported
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Not reported
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not reported
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Not reported
Selective reporting (reporting bias)	Unclear risk	Not reported
Other bias	Unclear risk	Not reported