Correlation between Maternal Mid Upper Arm Circumference and Neonatal Birth Weight: A Case-control Study

Abstract

Introduction: Birth weight is the best marker of optimal fetal growth and development. Apart from being an important determinant of newborn survival, Low Birth Weight (LBW) also indicates nutritional deprivation and poor health of the mother during and before pregnancy. On the other hand, Maternal nutrition and anthropometry also affect infant’s birth weight. Aim: To find out the correlation of maternal Mid Upper Arm Circumference (MUAC) and neonatal birth weight. Materials and Methods: This case-control study was conducted at Datta Meghe Medical College and Shalinitai Meghe Hospital and Research Centre (tertiary care hospital), Nagpur, Maharashtra, India, from September 2021 to February 2022. Convenient sampling method was used to select cases and control. All the mothers who had delivered full term live singleton new born with birth weight <2.5 kg were selected as a case and mothers who had delivered singleton new born babies ≥2.5 kg were selected as a control. There was a total of 100 mother-infant dyads with 50 pairs having infant with LBW (cases) and the rest 50 with infants having normal birth weight (controls). Data was collected on the socio-demographic status of the mothers using a predesigned questionnaire along with their weight (from record), maternal MUAC measurement, and birth weight of their babies. Analysis was done using Statistical Package for Social Sciences (SPSS) version 16.0. Results: Mean age of cases was 24.48±2.757 years and that of controls was 24.52±2.255 years. Mean birth weight was 2206±200.9 gm for cases and 2934±305.79 gm for the control group. Maternal MUAC was ≤23 cm in 52% of cases and only 16% in controls (OR- 5.69, CI: 2.23-13.74, p-value=0.001) A linear correlation was found between maternal MUAC and birth weight (r-value=0.3376, p-value=0.001). Conclusion: As there was a positive correlation between maternal MUAC ≤23 cm and LBW babies, maternal MUAC can be used as a predictor of LBW, and hence, measurement of maternal MUAC should be included during antenatal check-ups.