Fig. 7

Forest plots of unadjusted effect estimate for low birth weight in subgroups of study design. The Forest plots of unadjusted effect estimate for low birth weight when studies categorized based on study design are shown
Forest plots of unadjusted effect estimate for low birth weight in subgroups of study design. The Forest plots of unadjusted effect estimate for low birth weight when studies categorized based on study design are shown