Why the study?
Does preterm delivery of a first child increase the risk of subsequent ischaemic heart disease in mothers?
Population
504 mothers from the E3N cohort (109 cases of ischaemic heart disease and 395 controls)
Comparison
Preterm delivery of a first child vs Mothers without preterm delivery of a first child
Design
Case-control
Authors
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May inform maternal IHD risk assessment after preterm delivery; leaves open causal inference and need for prospective validation.
Does preterm delivery of a first child increase the risk of subsequent ischaemic heart disease in mothers?
Preterm delivery of a first child is associated with a twofold increased risk of subsequent ischaemic heart disease in mothers, independent of major cardiovascular risk factors.
Nardi et al. (2006) studied this question.