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Table 2 Evaluation of WHT device on WHO55 test with respect to WHO grading scheme

From: Performance of a malaria microscopy image analysis slide reading device

Accreditation Level Detection of parasitaemia Species Identification Parasite Quantitation
Based on lowest grade achieved 40 slides 20 Slides (within 25% of true count) 15 Slides
Level 1 (Expert) 90% 90% 50%
Level 2 80% - <90% 80% - <90% 40% - <50%
Level 3 70% - <80% 70% - <80% 30% - <40%
Level 4 <70% <70% <30%
WHT analyser 95% Confidence Interval 75% CI 59 to 87 45% CI 23 to 68 7% CI 0 to 32