Original Research

Accuracy of the product of symphysio-fundal height and abdominal girth in prediction of birth weight among term pregnant women at Keffi, Nigeria

Bolanle O. Ariyo, Stephen Yohanna, Jelil O. Odekunle
African Journal of Primary Health Care & Family Medicine | Vol 12, No 1 | a2113 | DOI: https://doi.org/10.4102/phcfm.v12i1.2113 | © 2020 Bolanle O. Ariyo, Stephen Yohanna, Jelil O. Odekunle | This work is licensed under CC Attribution 4.0
Submitted: 12 April 2019 | Published: 10 June 2020

About the author(s)

Bolanle O. Ariyo, Department of Family Medicine, Federal Medical Centre, Keffi, Nigeria
Stephen Yohanna, Department of Family Medicine, Bingham University Teaching Hospital, Jos, Nigeria
Jelil O. Odekunle, Statistics and Research Unit, Federal Medical Centre, Keffi, Nigeria


Background: A reliable prediction of foetal birth weight aids in decision regarding time and mode of delivery.

Aim: This study aimed to determine the accuracy of the product of symphysio-fundal height and abdominal girth in predicting birth weight among pregnant women in Keffi, Nigeria.

Setting: The study involved pregnant women presenting for delivery at the Federal Medical Centre, Keffi, Nigeria from July to October 2017.

Methods: One hundred and fifty-three pregnant women at term with singleton foetuses were recruited by systematic random sampling. An interviewer-administered questionnaire was used to obtain their socio-demographic data, past medical and obstetric history. Symphysio-fundal height and abdominal girth measurements were used to calculate the estimated foetal weight. This was compared with the actual birth weight. Absolute percentage error was used to determine the overall predictive error of Dare’s formula. Data were analysed using SPSS version 20.0. Statistical significance was set at p < 0.05 and 95% confidence level.

Results: The mean age of the participants was 29.65 ± 5.15 years. The mean gestational age was 39.5 ± 1.2 weeks. There was a significant correlation (r = 0.52, p < 0.001) between the estimated foetal weight and the actual birth weight. Ninety (66.2%) of the babies within normal weight and six (85.7%) of macrosomic babies were correctly predicted. None of the low birth weight babies was correctly predicted by the formula.

Conclusion: Dare’s formula accurately predicted normal weight and macrosomic babies, but less accurately predicted low birth weight babies.


Dare’s formula; birth weight prediction; symphysio-fundal height; abdominal girth; Keffi; Nigeria


Total abstract views: 2016
Total article views: 4248

Crossref Citations

No related citations found.