Figure 4From: Malaria has no effect on birth weight in RwandaFrequencies of obstetric events: still births (purple columns) and premature deliveries (green columns) recorded during the whole study period (right y-axis) and mean monthly incidence of presumed (blue columns) and confirmed (red columns) malaria per 1000 capita (left y-axis), ranked by total incidence (means over the years of study).Back to article page