Figure 4

Bland and Altman plots to demonstrate the presence of any bias between different methods of counting the parasite loads, on a log scale, to show relative differences. (a) Comparison of Earle and Perez with thick film methods (after averaging each method across all raters). X axis: Mean (geometric) averaged across both methods. Y axis: Relative difference between mean (geometric) counts from each method (Earle and Perez over Thick film method). (b Comparison of Earle and Perez with Thick Film methods (after averaging Earle and Perez across all raters). X axis: Mean (geometric) averaged across both methods. Y axis: Relative difference between mean (geometric) counts from each method (Earle and Perez over Thick film method). (c) Comparison of Thick Film with Thin Film methods (after averaging thick Film method across all raters). X axis: Mean (geometric) averaged across both methods. Y axis: Relative difference between mean (geometric) counts from each method (Thick film over thin film method).