RESUMEN
Birth weight is the most important factor that affects infant and child mortality. This one year study was conducted in a cohort of pregnant women to study the proportion of low birth weight babies and to find out the socio-economic and maternal risk factors affecting the birth weight of newborns and its medico-legal significance. Information regarding socio-economic status, obstetric history and present pregnancy was collected. These women were followed up till their delivery and birth weight was recorded with 24 hours of delivery. Birth weight was available for 256 births. The overall prevalence of low birth weight was 34.37%. Overall mean birth weight was found to be 2.64±0.444 with 95% confidence interval of 2.59-2.69. Primigravida mothers showed the highest prevalence of low birth weight (30.86%, p< 0.001). The main factors which were significantly associated with LBW were maternal education, stature, age at delivery; short inter pregnancy interval, inadequate antenatal care, and per capita income of family.