Error Analysis for Determination of Accuracy of Johnson's Formula, Dare's Formula and Mother's Opinion for the Estimation of Birth Weight: Results of an Iranian Cross-Sectional Study

Alirezaei, S. and Azmoude, E. and Ghaderi, A. (2018) Error Analysis for Determination of Accuracy of Johnson's Formula, Dare's Formula and Mother's Opinion for the Estimation of Birth Weight: Results of an Iranian Cross-Sectional Study. Acta Facultatis Medicae Naissensis, 35 (4). pp. 320-329.

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Error Analysis for Determination of Accuracy of Johnson's Formula, Dare's Formula and Mother's Opinion for the Estimation of Birth Weight Results of an Iranian Cross-Sectional Study.pdf

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Abstract

Accurate fetal weight estimation is important for the management of birth. According to the existing literature, none of the clinical techniques is superior to any other. This study aimed to compare error analysis for the determination of the accuracy of Johnson's formula, Dare's formula and mother's opinion for the estimation of birth weight. A cross-sectional study involving 147 full-term, cephalic, singleton pregnancies, was performed. The mother's opinion was recorded and Johnson's and Dare's formulas were used to calculate the fetal weight. Accuracy was determined by percentage error, absolute percentage error, and proportion of estimates within 10 of actual birth-weight. Statistical analysis was done using the RM ANOVA, Friedman and Cochran. P < 0.05 was considered significant. The birth weight was correctly estimated in 34.7, 58.5, 66 of the cases using the mother's estimate, Dare's and Johnson's formulas. Respectively the proportion of the mother's estimate and Dare's formula was significantly lower than that of Johnson's formula for all birth weights. No significant difference was observed in all the measures of accuracy for the low birth-weight range. The mean error of Johnson's formula in both normal weight and macrosomic groups was less than those obtained by the Dare's formula and mother's opinion. The Johnson's formula is more accurate in actual birth weight estimation than the Dare 's one and mother's opinion. In the normal weight range, Johnson's formula is more accurate of the two, while in the macrosomic group, Dare's formula appears to be more accurate. © 2019 Somayeh Alirezaei, et al., published by Sciendo 2019.

Item Type: Article
Additional Information: Export Date: 16 February 2020 Correspondence Address: Azmoude, E.; Department of Midwifery, Faculty of Nursing and Midwifery, Torbat Heydariyeh, University of Medical SciencesIran; email: azmoudehe@gmail.com
Uncontrolled Keywords: birth weight fetal weight Iran accuracy adult Article artificial milk cross-sectional study echography education error female fetus weight gestational age human major clinical study menstrual cycle pregnancy
Subjects: WQ Obstetrics
Divisions: Mashhad University of Medical Sciences
Depositing User: lib2 lib2 lib2
Date Deposited: 09 Jun 2020 05:50
Last Modified: 09 Jun 2020 05:50
URI: http://eprints.mums.ac.ir/id/eprint/17185

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