Table 1.
Patient characteristics and information about the time of the CT-imaging in relation to symptom onset and pathogen testing.
| Variable | COVID 19 | Non-COVID-19 | P value |
|---|---|---|---|
| N | 90 | 294 | |
| Age, mean (SD), years | 62 (14) | 62 (13) | 0.894tt2 |
| Sex, n (%) | 0.228chi2 | ||
| Female | 30 (33) | 121 (41) | |
| Male | 60 (67) | 173 (59) | |
| Time from symptom onset to CT, mean (SD), days* | 9,3 (6) | 7,1 (9,7) | 0.011tt2 |
| Time CT after test, mean (SD), days | 2 (4.3) | −0.81 (5.3) | <0.001tt2 |
| Symptoms, n (%) ** | |||
| Fever | 70 (78) | 181 (62) | 0.007chi2 |
| Cough | 68 (76) | 131 (45) | <0.001chi2 |
| Shortness of breath | 62 (69) | 133 (45) | <0.001chi2 |
| Other | 58 (64) | 85 (29) | <0.001chi2 |
N = absolute number of cases, SD = standard deviation, chi2 = Pearson’s chi-squared test, tt2 = Welch’s two-sample t-test.
*Information available for all the patients in the COVID-19 group (n = 90) and for 79% of the patients in the non-COVID-19 group (n = 232).
** Information available for 99% of the patients in the COVID-19 group (n = 89) and for 92% of the patients in the non-COVID-19 group (n = 271).