Are women with gestational diabetes being screened for type 2 diabetes following pregnancy? A nationwide retrospective cohort study in Aotearoa New Zealand

•53.3% of women received appropriate screening within six months postpartum.•Inequity in postpartum type 2 diabetes screening was identified for Māori women.•Postpartum type 2 diabetes screening varied widely by geographic region.•Administrative data are viable for monitoring postpartum type 2 diabetes screening.