ArticleBirth (Berkeley, Calif.)2022
Maternal factors associated with interbirth intervals in Australia: Results from a population-based longitudinal study.
Article in Birth (Berkeley, Calif.), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.
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Who cites it
5 citing papers in PubMed, 1 synthesis or guideline pooled it, 5 citations in OpenAlex.
- Determinants of short interpregnancy intervals in high-income countries: a systematic review.Sexual and reproductive health matters · 2025Pooled it
- Postpartum Contraceptive Care: A Qualitative Study of Australian Child and Family Health Nurses' Experiences.Journal of advanced nursing · 2026Article
- Maternal sociodemographic characteristics of short and long interpregnancy intervals in Japan: an analysis using national birth data.BMC public health · 2025Article
- Perceptions and recommendations of multiparas and health-related professionals on appropriate birth intervals: A descriptive qualitative study.International journal of nursing sciences · 2025Article
- Maternal factors associated with interbirth intervals in Australia: Results from a population-based longitudinal study.Birth (Berkeley, Calif.) · 2022Article
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Authors and funding
4 authors at 1 institution in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
objectiveShort and long intervals between successive births are associated with adverse birth outcomes, especially in low-income and middle-income countries, yet the birth intervals in high-income countries remain relatively understudied. The aim was to examine maternal factors associated with birth intervals in Australia.
methodsThe sample comprised 6130 participants in the Australian Longitudinal Study on Women's Health who were born in 1973-1978, had two or more births, and responded to regular surveys between 1996 and 2018. Interbirth interval (IBI) was defined as the time between successive live births. Maternal factors were examined using accelerated failure time models.
resultsFor women with only two births (n = 3802), the median time to the second birth was 34.0 months (IQR 23.1, 46.2) with shorter IBI associated with higher socioeconomic status (eg, university education (31.9 months), less income stress (31.1)), and longer IBI associated with age over 35 (39.7), fair/poor health (43.0), untreated fertility problems (45.5), miscarriage (39.4), or abortion (41.0). For women with three or more births (n = 2328), the median times to the second and third births were 31.2 months (19.9, 42.1) and 36.5 months (25.3, 50.1), respectively; some factors were consistent between the first IBI and second IBI (eg, university education and being married were associated with shorter IBI), whereas income stress was associated with longer first IBI but not with second IBI.
conclusionsUnderstanding maternal factors associated with birth intervals in a high-income country like Australia may enable more nuanced tailoring of guidelines for prepregnancy care.
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