Effect of interpregnancy interval on gestational diabetes: a retrospective matched cohort study

To examine the association between interpregnancy interval (IPI) and gestational diabetes using both within-mother and between-mother comparisons. A retrospective cohort study of 103,909 women who delivered three or more consecutive singleton births (n = 358,046) between 1 January 1980 and 31 Decemb...

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Bibliographic Details
Published in:Annals of epidemiology 2019-11, Vol.39, p.33-38.e3
Main Authors: Gebremedhin, Amanuel T., Regan, Annette K., Ball, Stephen, Betrán, Ana P., Foo, Damien, Gissler, Mika, Håberg, Siri E., Malacova, Eva, Marinovich, M. Luke, Pereira, Gavin
Format: Article
Language:English
Subjects:
Adult
Birth Intervals
Birth spacing
Diabetes, Gestational - epidemiology
Female
Gestational Age
Gestational diabetes
Humans
Interpregnancy intervals
Matched analysis
Medicin och hälsovetenskap
Middle Aged
Obesity - epidemiology
Population Surveillance
Pregnancy
Pregnancy complications
Premature Birth - epidemiology
Retrospective Studies
Risk Factors
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Summary:To examine the association between interpregnancy interval (IPI) and gestational diabetes using both within-mother and between-mother comparisons. A retrospective cohort study of 103,909 women who delivered three or more consecutive singleton births (n = 358,046) between 1 January 1980 and 31 December 2015 in Western Australia. The association between IPI and gestational diabetes was estimated using conditional logistic regression, matching pregnancies to the same mother and adjusted for factors that vary within-mother across pregnancies. For comparison with previous studies, we also applied unmatched logistic regression (between-mother analysis). The conventional between-mother analysis resulted in adjusted odds ratios (aOR) of 1.13 (95% CI, 1.06–1.21) for intervals of 24–59 months and 1.51 (95% CI, 1.33–1.70) for intervals of 120 or more months, compared with IPI of 18–23 months. In addition, short IPIs were associated with lower odds of gestational diabetes with (aOR: 0.89; 95% CI, 0.82–0.97) for 6–11 months and (aOR: 0.92; 95% CI, 0.85–0.99) for 12–17-month. In comparison, the adjusted within-mother matched analyses showed no statistically significant association between IPIs and gestational diabetes. All effect estimates were attenuated using the within-mother matched model. Our findings do not support the hypothesis that short IPI (
ISSN:1047-2797
1873-2585
1873-2585
DOI:10.1016/j.annepidem.2019.09.004