| Data source 1 NDHS 2018 | Data source 2 Government CEmOC facilities, Lagos state | Data source 3 UBTH, Benin City, Edo State |
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Study site | National sample of households in Nigeria | All public CEmOC hospitals in Lagos State | Apex referral hospital in Benin City, Edo State |
Source of information | Woman’s self-report, recalled up to 5 years before survey | Patient hospital records | Patient hospital records |
Study type | Cross-sectional household survey | Retrospective census of patient records | Retrospective census of patient records |
Data collection period | 14 August 2018–29 December 2018 | 14 September 2019–2 March 2020 | 7 August 2018–21 August 2018 |
Time of births included in study | 1 January 2013–29 December 2018 | 1 November 2018–31 December 2019 | 1 December 2017–31 July 2018 |
Study population | Women with a live birth | Pregnant women who presented in emergency at maternity wards in one of the 24 government (federal and state)-owned facilities (conception to 7 days postpartum) | ‘Un-booked’ pregnant women admitted to the UBTH maternity ward in the perinatal period (23+ weeks gestation to 7 days postpartum) |
Perinatal outcome measures used in analysis | Birth by caesarean section, Early neonatal death (within 7 days after delivery) | Birth by caesarean section, Maternal death, Stillbirth, Early neonatal death | Birth by caesarean section, Maternal death, Stillbirth |