Table 3. Results obtained from the Paris site dogs according to first, second, or third presentation of the COVID-19 positive samples.

	First, second, or third presentation of the COVID-19 positive sample	Number of trials	Correct identifications	Success rate [95% CI]
Guess	1st	24	22	92% [73%-99%]
	2nd	24	18	75% [53%-90%]
	3rd	4	3	75% [19%-99%]
Maika	1st	23	20	87% [66%-97%]
	2nd	26	20	77% [56%-91%]
	3rd	6	5	83% [36%-100%]
Gun	1st	24	20	83% [63%-95%]
	2nd	23	22	96% [78%-100%]
Oslo	1st	21	19	90% [70%-99%]
	2nd	10	10	100% [69%-100%]

CI: Confidence interval.