Table 3.

Data sources for analysis

Question	Data source
	eCRF	POCT index test for active COVID-19	Laboratory reference test for active COVID-19	POCT index test for past COVID-19	Laboratory reference test for past COVID-19	Composite reference standard
Standard diagnostic accuracy of active infection	Yes	Yes—visit 1. Current and past suspects	Yes—visit 1. Current and past suspects	No	No	No
Enhanced diagnostic accuracy of active infection	Yes	Yes—visit 1. Current and past suspects	Yes—visit 1. Current and past suspects	No	Yes—visit 2. Current and past suspects	Yes
Standard diagnostic accuracy of past infection	Yes	No	No	Yes—visit 1. Current and past suspects	Yes—visit 1. Current and past suspects	No
Enhanced diagnostic accuracy of past infection	Yes	Yes—visit 1. Current and past suspects	Yes—visit 1. Current and past suspects	Yes—visit 1. Current and past suspects	Yes—visit 1 and 2. Current and past suspects	Yes