Table 6 Groups and sample size of training and test–retest phases.

From: Sniffer dogs performance is stable over time in detecting COVID-19 positive samples and agrees with the rapid antigen test in the field

Group

Description

Phase

Training

Test

Retest

CASES

Patients COVID-19 positive on RT-PCR for SARS-CoV-2

103

24

19

Positive non vaccinated

87

16

5

Positive vaccinated

16

8

14

CONTROLS

Patients COVID-19 negative on RT-PCR for SARS-CoV-2

338

124

109

Negative non vaccinated

102

28

18

Negative vaccinated

236

96

91