Determinants of low birth weight: a case control study in a district hospital in Karnataka.

A Case-control study was conducted in District Lady Goschen hospital, Dakshina Kannada district, Southern Karnataka. Subjects were mothers who underwent normal delivery and their neonates. A total of 150 cases and 300 controls were selected. Significant risk factors identified in univariate analysis included pre pregnancy maternal weight (<45 kgs)(OR=6.77), anaemia in pregnancy (Hb<11 gm%) (OR=3.11), age less than 20 years (OR=2.96) and maternal height (<145 cms) (OR=2.79). Multiple logistic regression analysis revealed that pre pregnancy maternal weight (<45 kgs)(OR=7.02), anemia in pregnancy (OR=4.37) and maternal age less than 20 years (OR=3.96) were the significant risk factors of low birth weight of term babies. The strategy needs to focus attention on nutrition education to facilitate better weight gain during adolescent period. Discouraging teenage pregnancy is also essential in order to reduce the burden of LBW babies.