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Comparison of birth weight between neonates of smoking and non-smoking mothers. Babies of mothers that smoked were smaller at birth than babies born from non-smoking mothers (P = 0.001). Median weight and interquartile range: smoking group = 3,140 g [IQR = 685], non-smoking group = 3,477 g [IQR = 665]. N = 61 smokers and 78 non-smokers.
