Table 2.
Comparisons between patients positive on RT‐PCR and/or serology and negative on RT‐PCR and/or serology for SARS‐Cov‐2 infection
| Characteristics | Positive RT‐PCR and/or serology (n =150 tested) | Negative RT‐PCR and/or serology (n = 150 tested) | P‐valuesa |
| Total | 10 (7) | 140 (93) | |
| Sex (female) | 7 (78) | 78 (56) | 0.3 |
| Age, years, median (IQR) | 34 (26–38) | 27 (20–39) | 0.3 |
| History | |||
| Connective tissue diseases | 0 | 2 (1) | 1 |
| Chilblains | 1 (10) | 20 (14) | 1 |
| Raynaud syndrome | 2 (20) | 13 (9) | 0.3 |
| Extracutaneous clinical manifestations | |||
| Fever | 2 (20) | 19 (14) | 0.6 |
| Cough | 2 (20) | 28 (20) | 1 |
| Dyspnoea | 3 (30) | 18 (13) | 0.1 |
| Asthaenia | 5 (50) | 41 (29) | 0.2 |
| Myalgia | 3 (30) | 15 (11) | 0.1 |
| Headache | 7 (70) | 41 (29) | 0.013 |
| Odynophagia | 3 (30) | 18 (13) | 0.15 |
| Anosmia/ageusia | 5 (50) | 8 (6) | 0.001 |
| Fever and/or cough and/or dyspnoea and/or anosmia/ageusia | 7 (70) | 42 (30) | |
| Asthaenia and/or myalgia and/or headache and/or odynophagia | 0 | 28 (20) | |
| None | 3 (30) | 70 (50) | 0.048 |
| Acral lesion characteristics | |||
| Typical chilblains | 5/8 (63) | 95/116 (81) | 0.2 |
RT‐PCR, reverse transcription polymerase chain reaction; IQR, interquartile range.
a P‐values from χ2‐test or Fisher’s exact test for categorial variables or Mann–Whitney U‐test for continuous variables. Data are presented as n (%) unless otherwise indicated.