Methods	Randomised.
Participants	200 patients with high-risk pregnancies.
Interventions	Biophysical profile protocol and modified biophysical profile protocol
Outcomes	Abnormal test, perinatal mortality, meconium passage, caesarean section for abnormal test, Apgar score < 7, overall adverse outcome
Notes
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.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Not blinded.
Blinding of outcome assessment (detection bias) All outcomes	High risk	Not blinded.
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Unclear - limited data as only abstract available.
Selective reporting (reporting bias)	Unclear risk	Unclear - limited data as only abstract available.
Other bias	Unclear risk	Unclear - limited data as only abstract available.