There was a highly significant association between the duration of chemoprophylaxis and the occurrence of LBW (adjusted OR = 4.61; 95% CI = 2.27; 9.36 for the comparison between the lowest and highest duration quartiles), and a significant duration-effect relationship (chi-square for linear trend: P < 0.001).
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Is chloroquine chemoprophylaxis still effective to prevent low birth weight? Results of a study in Benin.
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