In a cohort study, Isranurug et al (2007) reported that maternal age (<20 and >35 y; RR = 1.85, 95% CI:1.47-2.33), maternal height (<145 cm; RR = 2.29, 95% CI: 1.57-3.34) and pregnancy weight gain (<10 kg, RR = 1.67, 95% CI: 1.24-2.26) were significant contributors to LBW.24Thirteen percent of mothers in this study were teenagers. Teenage mothers had higher rates of LBW (15.5%) compared to older mothers (8.8%).25Due to uncertainty in gestational estimation, lack of data on prepregnancy weight to accurately determine weight gain during pregnancy, and increased prevalence of teenage pregnancy, further investigation into the potential causes of low birth weight should be done to identify appropriate interventions.
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