India 2013a.

Methods	Allocation concealment: not described, quote: "...prospective randomized study,.." no further details. Two arms
Participants	120 pre‐eclamptic women after 20 weeks of gestation with BP more than 140/90 mmHg on 2 separate occasion 6 hrs apart, proteinuria +1 dipstick in 2 midstream samples collected 4 hrs apart. Singleton with vertex presentation. Excluded: diabetes, Rh isoimmunisation, multi‐fetal pregnancy, thyrotoxicosis, cardiac disease, chronic HT, renal disease, bronchial asthma, antepartum haemorrhage, malnutrition, poli‐hydramnios, already receiving antihypertensive drugs.
Interventions	Exp: oral labetalol 100 mg 3 times a day. (90 women) Control: oral methyldopa 250 mg 3 times a day. (90 women)
Outcomes	Women: response in lowering BP over a period of 7 days, blood urea and serum creatinine, platelet count, mode of onset of labour, gestational age at delivery, mode of delivery, side‐effects. Babies: birthweight, stillbirth, preterm delivery, Apgar score, RDS, jaundice, bradycardia, hypoglycaemia, need for NICU.
Notes	Method for measuring BP not mentioned. Funding: no information about funding source. Declaration of interests not described.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Computer‐generated sequence of random numbers.
Allocation concealment (selection bias)	Unclear risk	Not described. Quote:"...prospective randomized study,.." no further details.
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Not described.
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not described.
Incomplete outcome data (attrition bias) All outcomes	Low risk	No.
Selective reporting (reporting bias)	Unclear risk	Assessment from published study report.
Other bias	Unclear risk	Groups appear comparable at baseline. No information about funding source. Declaration of interests not described.