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. 2020 Nov 3;68(1):28–34. doi: 10.1016/j.jadohealth.2020.09.038

Figure 3.

Figure 3

Sensitivity analysis for primary outcomes with varying RT-PCR sensitivity and specificity and for proportion of (eventually) symptomatic COVID-19 cases. (A) Number of true positives with varying sensitivity; (B) Number of true negatives with varying specificity; (C) Number of true positives with varying proportions of eventually symptomatic disease. Green line represents Strategy 1: symptom-based screening only. Red line represents Strategy 2: symptom-based RT-PCR testing. Purple line represents Strategy 3: universal, single RT-PCR testing. Blue line represents Strategy 4: repeat RT-PCR based on symptoms. Pink line represents Strategy 5: universal repeat RT-PCR testing. RT-PCR, reverse transcription polymerase chain reaction.