Fig. 3From: Effectiveness of indoor residual spraying on malaria control: a systematic review and meta-analysisThe total effect of indoor residual spraying on the risk of malaria by the random effects model. ni: the number of malaria cases who accepted indoor residual spraying (IRS); Ni: the number of people who accepted IRS; nc: the number of malaria cases who did not accept IRS; Nc: the number of people who did not accept IRS; OR: odds ratio; CI: confidence intervalBack to article page