Figure 3From: "Test and treat" or presumptive treatment for malaria in high transmission situations? A reflection on the latest WHO guidelinesLikelihood ratios of malaria when the parasite detection test is positive (LR+) and likelihood ratios of the absence of malaria when the parasite detection test is negative (LR -), according to the prevalence of infection in the general population, and to the sensitivity and specificity of the test for the detection of parasites. Clinically useful tests are above the line (LR > 5). (Data from [11])Back to article page