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The Obare Method Calculator

The Obare Method calculator is a Microsoft Excel-based tool developed to facilitate adherence to the recommendations for internal quality control (IQC) defined in the recently released methods manual ‘Microscopy for the detection, identification and quantification of malaria parasites on stained thick and thin blood films in research settings’ (WHO 2015). It enables researchers to make systematic assessments of whether the results of two blood film reads are concordant or require a third read, calculate the mean parasite density of the reads on positive slides, and report consensus results.