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Design: Randomised cluster control trial.
Allocation: Schools were randomised 1:1 intervention:control. Randomisation undertaken using random number tables without stratification or blocking.
Setting: 57 high schools (excluding Catholic schools) in Perth, Western Australia.
Participants: 2834 girls aged 13–15 enrolled at an included high school who were nulliparous, 1267 in the intervention schools and 1567 in the control schools.
Intervention: Each girl was assigned to care for an infant simulator (Baby Think It Over) doll for 64 hours. The simulator replicates the feeding and sleeping patterns of a 6-week-old infant.
Outcomes: Pregnancy (live birth, stillbirth, abortion).
Follow-up period: Until participants reached 20 years of age (5–7 years depending …
Correspondence to Dr Giordano Pérez-Gaxiola, Evidence-Based Medicine, Hospital Pediátrico de Sinaloa, Blvd. Constitución y Donato Guerra SN, Col. Almada, Culiacan 80200, Mexico;
Contributors GP-G wrote the commentary. Amanda J Friend wrote the structured abstract.
Competing interests None.
Provenance and peer review Commissioned; internally peer reviewed.