Skip to main content
. 2019 Oct 30;2019(10):CD004659. doi: 10.1002/14651858.CD004659.pub3

USA 1994.

Methods Quote: "Randomised"; 5/54 (9%) women lost to follow‐up.
Participants 54 women with chronic hypertension or previous severe PE, enrolled at 13‐15 weeks.
Interventions Exp: aspirin 100 mg sustained release/day until 37 weeks.
 Control: placebo.
Outcomes Women: PE. 
 Babies: stillbirth; SGA.
Notes Published as abstract only. Ethics form also available.
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Low risk Randomised via simple method e.g. coin toss
Allocation concealment (selection bias) Unclear risk Double‐blind, no further information available.
Blinding (performance bias and detection bias) 
 All outcomes Low risk Quote: "double blind"; placebo used.
Incomplete outcome data (attrition bias) 
 All outcomes Unclear risk 5/54 (9%) women lost to follow‐up. 49/54 completed study; distribution across groups not specified.
Selective reporting (reporting bias) Unclear risk Protocol not available (although ethics form is). Only abstract shows summary results ‐ therefore insufficient information to judge.
Other bias Unclear risk Insufficient information to judge