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We investigated the ability of intermittent preventive treatment in pregnancy (IPTp) with sulphadoxine/pyrimethamine to prevent anaemia and low birthweight in Gambian multigravidae. Between July 2002 and February 2004, 2688 multigravidae living in a rural area of The Gambia received SP (1346 women) or placebo (1342 women) up to four times during pregnancy and were followed until 6-weeks post-partum. Shortly after delivery, 10.7% of women in the intervention group and 8.8% in the control group were severely anaemic Hb < 7 g/dl, risk difference = 0.02 (95% CI -0.01, 0.04), P = 0.17. The overall mean birthweight of infants born to women who had received SP (3103 g) was very similar to that observed in infants born to women in the control group 3075 g; difference = 28 g (95% CI -11 g, 67 g), P = 0.16. However, among women who did not use a bednet (either insecticide treated or untreated), infants born to women who had received SP weighed more than infants born to women in the control group 3147 g vs. 3044 g; difference 143 g (95% CI 53 g, 232 g), interaction test P < 0.001. This study did not show that IPTp with SP benefited Gambian multigravidae overall but that it may benefit a sub-group of women who do not use a bednet. In areas such as The Gambia, provision of insecticide-treated bednets to multigravidae may provide an adequate means of protection against malaria in pregnancy without the need for additional IPTp.
Mbaye et al. (Sat,) studied this question.