This is the peer reviewed version of the following article: DoPierala AL, Bhatta S, Raja EA, Bhattacharya S, Bhattacharya S. Obstetric consequences of subfertility: a retrospective cohort study. BJOG 2016; 123:1320–1328, which has been published in final form at DOI: 10.1111/1471-0528.13584. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.