A PROSPECTIVE COHORT STUDY ON INCIDENCE AND RISK FACTORS FOR LOW BIRTH WEIGHT AMONG INSTITUTIONAL DELIVERIES IN KATHMANDU, NEPAL
Background: Low birth weight (LBW) in developing countries is mainly due to preterm delivery and intrauterine growth retardation. Among other causes of low birth weight, maternal factors are predominant. Aim: This study aimed to identify how strongly maternal risk factors associated with low birth weight.
Method and Materials: The study used cohort prospective design among 700 pregnant women attended in antenatal care outdoor patients in Paropakar Maternity Women's hospital with 6 months follow up.
Results: Among 700 respondents, 23 (3%) were lost in follow up. Out of 677 mothers, 151 (22%) gave birth of LBW. The mean birth weight was 2724gm. The mean maternal weight was 48kg, height was150cm and BMI was 21.2kg/m2. The cumulative incidence of LBW in the cohort was 22%. Mothers with weight <45kg had 11 times higher risk of giving of LBW babies (RR=10.92, CI:7.90-15.08); BMI <18.5kg/m2 had 3 times higher risk of giving LBW babies (RR=3.08, CI:2.30-4.12). Mothers without having a past history of LBW, and preterm delivery were 0.3 times, and 0.44 times the chances of giving LBW babies respectively. There is positive association of LBW with primigravida (RR=1.09), and primiparity (RR=1.41), however, it could not reach statistically significant.
Conclusion: The study concluded that maternal weight <45kg is the strongest risk factor for LBW. Other maternal risk factors were weight <45kg, BMI<18.5kg/m2, mothers without a past history of LBW, and preterm are also statistically significant to LBW.
KEYWORDS: Low birth weight, cohort, hospital-based, maternal anthropometry.
Copyright (c) 2018 SHAKYA KARUNA L, SHRESTHA NAVEEN, SHRESTHA AMOGHA, ONTA SHARAD R
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