Implementation effectiveness of an antenatal lifestyle intervention to optimize gestational weight gain in women with obesity
Authors' conclusion
Lifestyle intervention did not alter the overall proportion with excess GWG or total GWG. Secondary analysis, excluding women with gestational diabetes mellitus, showed less GWG. This demonstrates implementation and maintenance of the intervention in routine antenatal care, generating new knowledge within the RE-AIM framework.
Study context
- Population
- Women with prepregnancy BMI 25–43 kg/m² at <23 weeks' gestation, Australian maternity service90% of eligible women
- Participants
- 404 women
- Comparison
- Antenatal lifestyle intervention vs standard care
- Interventionn = 202
- Standard caren = 202reference
- Outcome
- Effectiveness in reducing excess GWG
Methodological detailsembedded pragmatic behavioral intervention, Reach, Efficacy, Adoption, Implementation, and Maintenance (RE-AIM) framework
- Embedded pragmatic behavioral intervention
- RE-AIM framework
Main finding
As reported in the abstract
Proportion exceeding GWG recommendations and mean GWG
- No differences in proportion exceeding gestational weight gain (GWG) recommendations or mean GWG between groups
Secondary outcomes
| Outcome | Estimate | P value |
|---|---|---|
| GWG above recommendations, excluding women with GDMLower proportion with intervention · secondary analysis | β coefficient 0.51 (95% CI 0.27–0.97) | P = 0.04 |
| GWG, excluding women with GDMLess GWG with intervention · secondary analysis | β coefficient −1.93 kg (95% CI −3.63 to −0.24) | P = 0.03 |
Adoption, implementation and maintenance
- Program continued with plans/funding for scale-up
- 4 years
- Strong support for service among staff/participants (qualitative)
- Strong fidelity and staff/participant acceptability
Original publication
Implementation effectiveness of an antenatal lifestyle intervention to optimize gestational weight gain in women with obesity. Obesity (Silver Spring). Published 10 December 2024. doi:10.
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