- Comparisons of the demographic and clinical data between coronavirus disease-19 positive and coronavirus disease-19 negative patients.
| Variables | COVID-19 (+) | COVID-19 (-) | P-values | χ2 | df |
|---|---|---|---|---|---|
| Gender | |||||
| Female | 34 (47.9) | 20 (47.6) | 0.978 | 0.001 | 1 |
| Male | 37 (52.1) | 22 (52.4) | |||
| Age (years), mean±SD | 71±15 | 68±17 | 0.402 | ||
| Number of days of hospitalization, median (IQR) | 29 (20-40) | 46 (28-85) | 0.0002* | ||
| Concomitant Gram positive infection | |||||
| Yes | 15 (21.1) | 6 (14.3) | 0.366 | 0.82 | 1 |
| No | 56 (78.9) | 36 (85.7) | |||
| Concomitant Gram negative infection | |||||
| Yes | 36 (50.7) | 25 (59.5) | 0.363 | 0.83 | 1 |
| No | 35 (49.3) | 17 (40.5) | |||
| Other cultures | |||||
| Blood | 29 (59.6) | 22 (71.0) | 0.636 | 1.71 | 3 |
| Urine | 3 (5.9) | 1 (3.2) | |||
| Tracheal aspirate | 16 (31.4) | 7 (22.6) | |||
| The others | 3 (5.9) | 1 (3.2) | |||
| APACHE 2 score, mean±SD | 18.5±8.5 | 21.7±11.8 | 0.101 | ||
| Expected mortality (%), median (IQR) | 25.0 (12.0-55.0) | 31.4 (20.3-67.1) | 0.074 | ||
| Comorbidity | |||||
| Yes | 59 (83.1) | 29 (69.0) | 0.082 | 3.02 | 1 |
| No | 12 (16.9) | 13 (31.0) | |||
| Intubation | |||||
| Yes | 54 (76.1) | 40 (95.2) | 0.008* | 6.94 | 1 |
| No | 17 (23.9) | 2 (4.8) | |||
| Intubation day after hospitalization, median (IQR) | 3 (1-10) | 2 (1-6) | 0.655 | ||
| CVC | |||||
| Yes | 57 (80.3) | 41 (97.6) | 0.009* | 6.89 | 1 |
| No | 14 (19.7) | 1 (2.4) | |||
| Parenteral nutrition | |||||
| Yes | 53 (74.6) | 41 (97.6) | 0.002* | 9.96 | 1 |
| No | 18 (25.4) | 1 (2.4) | |||
| Steroid | |||||
| Yes | 62 (87.3) | 12 (28.6) | <0.0001* | 40.30 | 1 |
| No | 9 (12.7) | 30 (71.4) | |||
| Antibiotics | |||||
| Yes | 63 (88.7) | 41 (97.6) | 0.092 | 2.84 | 1 |
| No | 8 (11.3) | 1 (2.4) | |||
| Lymphopenia | |||||
| Yes | 42 (59.2) | 19 (45.2) | 0.151 | 2.06 | 1 |
| No | 29 (40.8) | 23 (54.8) | |||
↵Values are presented as numbers and percentages (%), mean ± standard deviation (SD), or median and interquartile range (IQRs). The comparisons of numerical variables between groups were analyzed with the independent-sample t-test and the Mann-Whitney-U test according to the distribution of data. The comparisons of categorical variables between groups were analyzed with the Chi-square (χ2) test.
↵* A p-value of < 0.05 was considered significant.
COVID-19: coronavirus disease-19, CVC: central venous catheterization, APACHE: acute physiology and chronic health evaluation, χ2: Ki-kare, df: degree of freedom