Interpregnancy interval and severe maternal morbidity - What can we learn from vital records data?

The article offers information on associations between interpregnancy interval and severe maternal morbidity types. Topics discussed include impact of factors such as maternal age, pregnancy intention, socioeconomic status or outcome of the index pregnancy on adverse outcomes; role of heterogeneity in birth spacing counselling; and impact on analyses of interpregnancy interval and severe maternal morbidity due to limitations of the U.S. vital statistics data.