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Incidence and risk factors for pre-eclampsia in Jos Nigeria

Jonah Musa, Caleb Mohammed, Amaka Ocheke, Makswhar Kahansim, Victor Pam, Patrick Daru

Abstract


Objective: We sought to estimate the incidence and risk factors associated with development of pre-eclampsia (PET) in Jos, Nigeria.
Methods: An open cohort study of singleton pregnant women attending the antenatal clinic of Jos University Teaching Hospital (JUTH), Nigeria between November 2010 and August 2011. Eligible healthy women at ≤ 20 weeks gestation were enrolled and followed up until delivery or development of pre-eclampsia. Baseline demographic characteristics including weight, height and body mass index (BMI) were collected at enrollment. Incidence, risk factors and hazard ratios for developing PET were estimated with corresponding 95% confidence intervals and p-values. All statistical analyses were done with STATA version 11, college station, Texas, USA.
Results: A total of 2416 pregnant women were screened for eligibility out of which 323 were eligible for inclusion. The incidence of PET was 87.9 per 1,000 pregnancies (8.8%). The significant risk factors for PET were previous history of PET (RR=5.1, 95% CI: 2.2-12.1) and BMI at booking ≥ 25 kg/m2 (RR=3.9, 95% CI: 1.5-10.0).
Conclusion: The incidence of PET was relatively high in our cohort in Jos, Nigeria and a previous history of the disease and overweight or obese pregnant women have a significant hazard of developing the disease in the course of gestational follow up. Targeting women with these characteristics for early preventive intervention and close surveillance at the antenatal booking clinic may help in prevention of the disease and its complications.

Keywords: Pre-eclampsia, incidence, risk, hazard, Jos Nigeria.




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