Table 1.
Baseline characteristics and estimated disease prevalence according to different diagnostic approaches, in subjects with or without symptoms of COVID admitted at the emergency ward of Lausanne University Hospital. Please note that in this setting, the RAT only detected about one-third of asymptomatic hospitalized patients positive by RT-PCR.
| Without COVID-19 Symptoms (N = 239) |
With COVID-19 Symptoms (N = 293) |
p-Value | |
|---|---|---|---|
| Gender | |||
| Female | 105 (43.9%) | 131 (44.7%) | 0.927 |
| Male | 134 (56.1%) | 162 (55.3%) | |
| Age | |||
| Median (IQR) years | 67.0 [48.5, 81.0] | 75.0 [61.0, 85.0] | <0.001 |
| SARS-CoV-2 RT-PCR result | |||
| Negative | 215 (90.0%) | 203 (69.3%) | <0.001 |
| Positive | 24 (10.0%) | 90 (30.7%) | |
| SARS-CoV-2 RAT * result | |||
| Negative | 231 (96.7%) | 253 (86.3%) | <0.001 |
| Positive | 8 (3.3%) | 40 (13.7%) | |
| Cycle threshold | |||
| Median (IQR) | 29.8 [22.6, 35.1] | 27.0 [20.5, 32.5] | 0.274 |
| Missing | 215 (90.0%) | 203 (69.3%) |
* RAT results represented here were obtained with the Standard Q® test, which was used for patients’ care. RAT: rapid antigen detection. RT-PCR: real-time polymerase chain reaction. IQR: interquartile range.