Sudan 2002.

Methods	Allocation concealment: not stated. Authors state::"...patients were randomly allocated..." Two arms
Participants	70 primigravid women with PE (BP =/> 90/109 mmHg x 2, 6 hrs apart plus 2+ proteinuria in dipsticks) at 28 to 36 weeks' gestation. Singleton pregnancy.
Interventions	Exp: oral methyldopa 750 mg/day to 4000 mg/day (34 women) Control: oral no drug treatment. (36 women) All women in both groups were admitted to hospital for bed rest.
Outcomes	Women: BP, abruptio, imminent eclampsia, eclampsia, preterm delivery, caesarean section, maternal death. Babies: birthweight, IUGR, admission to SCBU (reported as 'referral of baby'), perinatal deaths, Apgar score.
Notes	Korotkoff IV sound used for DBP. 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)	Unclear risk	Not described.
Allocation concealment (selection bias)	Unclear risk	Not described. Quote "...patients were randomly allocated...".
Blinding of participants and personnel (performance bias) All outcomes	High risk	Open‐label trial.
Blinding of outcome assessment (detection bias) All outcomes	High risk	No.
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.