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Pooled incidence rate ratio for any parasitaemia, monthly dihydroartemisinin-piperaquine vs placebo
DP=dihydroartemisinin-piperaquine. PYAR=person-years at risk. IR=incidence rate. IRR=incidence rate ratio. Lwin and colleagues36 and Zongo and colleagues6 did not report PYAR, instead they reported cumulative incidence over a year. PYAR was calculated based on the incidence rate and number of events. Zongo and colleagues'6 numbers are based on intent to treat.
