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  • Title: A simple approach for estimating birth weight in developing countries.
    Author: Sachar RK, Soni RK, Grewal JS, Sofat R.
    Journal: Indian J Matern Child Health; 1994; 5(2):33-5. PubMed ID: 12318801.
    Abstract:
    Health and nutritional status of an infant are accurately assessed with birth weight. In India, almost 30% of all births are low birth weight, which is related to a high risk of mortality and morbidity. Anthropometric measures have been found to be accurate indicators of birth weight. In this study, 483 normal singleton infants were measured at mid arm circumference and maximum thigh circumference; mid arm circumference measures were also taken from mothers. The precise position for the arm measurement was at the mid point between the tip of the acromion and the olecranon process in the left upper arm to the nearest .1 cm. Thigh measurement was just below the left gluteal fold. Measurements were taken within 48 hours of birth; information was also obtained on age, gravida, parity, and gestation. With control for gestation, there was a significant correlation between mid arm circumference, maternal arm circumference, and maximum thigh circumference. Maternal arm circumference had a predictive value of 6.54% infant mid arm circumference of 46.30%, and maximum thigh circumference of 44.0%. When all three measures are used concurrently, there is an increase in predicted value to 53.68%. With use of mid arm and maximum thigh circumference together, the predictive value is 54.6%. A correlation matrix shows the interaction of age, gestation, parity, weight, and the three anthropometric measures. The mean birth weight was 2851.5 g plus or minus 473.18 g, the mean infant mid arm circumference was 9.86 cm plus or minus 1.12 cm and the maximum thigh circumference was 16.20 cm plus or minus 1.78 cm. Maternal mid arm circumference was 25.08 cm plus or minus 2.90 cm; mother's age averaged 25.35 plus or minus 3.94 years. Gestation averaged 38.76 weeks plus or minus 1.64 weeks. Birth weights ranged from a low of 1600 g to a high of 4120 g.
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