Methods	Randomised trial.
Participants	122 women with a low-risk pregnancy (met criteria for birthing centre), booking before 26 weeks of gestation, older than 18 years of age, and who could read Spanish or English
Interventions	Reduced visits: 8 visits (booking + 15-19 weeks, 24-28 weeks, 32 weeks, 36 weeks, 38 weeks, then weekly until delivery) for all women regardless of parity. Standard ANC: standard visits (booking, then every 4 weeks to 28 weeks, every 2 weeks to 36 weeks, then weekly to delivery)
Outcomes	Women: number of visits attended, maternal complications, preterm labour, anaemia, recurrent UTI, pregnancy-induced hypertension, fetal malposition, substance abuse, post dates and others Babies: gestational age at birth, birthweight, average weekly weight gain, type of birth, Ballard score, intrauterine growth restriction, days in the newborn nursery, days in the neonatal intensive care unit, neonatal complications
Notes	Number of visits achieved: reduced visits group 7.6 (SD 1.6), standard ANC group 10.8 (SD 2.3)
Risk of bias
Item	Authors’ judgement	Description
Adequate sequence generation?	Yes	Computer-generated sequence stratified by 11 personal, clinical and demographic characteristics
Allocation concealment?	Unclear	Concealment of allocation: not described.
Incomplete outcome data addressed? All outcomes	No	Loss to follow up: 37 (30%) withdrew, 18/61 (30%) in reduced visits group and 19/61 (31%) in standard ANC group