Table 2. Phase 3: In vivo screening, efficacy trial.
Demographic and clinical characteristics of 848 participants in the scent-detection experiments.
| Variable | n (%) | |
|---|---|---|
| Sex | All Participants | 848 (100) |
| Females | 514 (60.6) | |
| Males | 334 (39.4) | |
| Age (years-old) | Median | 56 |
| Mean | 53 | |
| Youngest | 15 | |
| Oldest | 92 | |
| COVID-19 Prevalence | All Participants | 92 of 848 (10.85) |
| Government Employees | 4 of 320 (1.25) | |
| Health-Care Workers, HUSVF | 7 of 259 (2.70) | |
| Hospitalized Patients, HUSVF | 81 of 269 (30.1) | |
| COVID-19 Status | SARS-CoV-2 positive | 92 (10.85) |
| SARS-CoV-2 negative | 753 (88.8) | |
| SARS-CoV-2 indeterminate | 3 (0.35) | |
| Result by Reference Standard | rRT-PCR positive | 41 (4.83) |
| rRT-PCR negative | 753 (88.8) | |
| rRT-PCR indeterminate | 3 (0.35) | |
| Antigen positive | 51 (6.01) | |
| Antigen negative | 0 (0) | |
| Clinical Status at K9 Test | COVID-19, asymptomatic | 18 (2.12) |
| COVID-19, pre-symptomatic | 0 (0) | |
| COVID-19, symptomatic | 74 (8.73) | |
| Not COVID-19, but sick | 188 (22.2) | |
| Not COVID-19, healthy | 565 (66.6) | |
| Indeterminate, asymptomatic | 2 (0.24) | |
| Indeterminate, symptomatic | 1 (0.12) | |
HUSVF: Hospital Universitario San Vicente Fundación.