Maternal body mass index (BMI) in the preconception period, and association with child zBMI growth rates
Authors' conclusion
Maternal preconception BMI was associated with growth rate and mean zBMI in early childhood. The preconception period may be an important target for health interventions to promote healthy child growth rate and weight outcomes.
Study context
- Population
- Children aged 0–10 years in the TARGet Kids! primary care cohort, with maternal BMI measured in the 2 years before pregnancy
- Participants
- 499 children
- Exposure
- Per 5 kg/m² higher maternal preconception BMI
- Outcome
- Child WHO zBMI growth rates and mean zBMI
- Follow-up
- 0–10 years
Methodological detailsprimary care practice-based research cohort, linear mixed models
- Primary care practice-based research cohort
- Linear mixed models
Main finding
As reported in the abstract
Child zBMI growth rate and mean zBMI per 5 kg/m² higher maternal BMI (strongest association) · age 0 to 4 months
Higher zBMI growth rate per 5 kg/m² higher maternal BMI (p = 0.004)
0.031 zBMI SD unit/mo
Higher mean child zBMI per 5 kg/m² higher maternal BMI (p = 0.0002)
0.186 SD unit
Observational data: associations, not effects.
Original publication
Maternal BMI in the preconception period, and association with child zBMI growth rates. Pediatr Obes. Published 27 December 2022. doi:10.
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