Methods	Randomised controlled trial.
Participants	Outpatients referred for fetal heart monitoring.
Interventions	Visual or computerised interpretation of FHR monitoring recording
Outcomes	Number of additional fetal surveillance tests, amount of time spent per FHR test, perinatal morbidity and mortality, NICU admission for more than 2 days, and total NICU days. Perinatal morbidity was defined as caesarean delivery for fetal distress, hypocalcaemia (total serum calcium level < 7 mg/dL), hyperbilirubinaemia (indirect bilirubin level > 12 mg/dL), hypoglycaemia (glucose serum level < 30 mg/dL), respiratory distress syndrome, transient tachypnoea, and meconium aspiration
Notes
Risk of bias
Bias	Authors’ judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Random number table.
Allocation concealment (selection bias)	Low risk	Opaque envelopes.
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	Low risk	Five pregnancies were excluded from the outcome analysis because infants were diagnosed with congenital anomalies: four of these appear to be from the visual interpretation group (n=201) and one from the computerised interpretation group (n=204)
Selective reporting (reporting bias)	Low risk	All prespecified outcomes appear to have been reported upon.
Other bias	Low risk	“The two randomized groups were similar at baseline, but the computerized interpretation group has significantly fewer biophysical profiles compared with the visual interpretation group”