Table 2.
Characteristics of non-previous COVID-19 patients (n = 672) classified by basal RT-PCR and serologic screening into two groups: positive and negative SARS-CoV-2 infection
| Characteristics | Negative SARS-CoV-2 infectiona | Positive SARS-CoV-2 infectiona | P-value |
|---|---|---|---|
| n (%) | 569 | 103 | |
| Age (years), mean (SD) | 64.4 (14.7) | 67.6 (15.4) | 0.05 |
| Male (%) | 68.1 | 59.8 | 0.1 |
| Dialysis vintage (months), median (IQR) | 31.1 (14.9–73.8) | 26.4 (11.8–62.2) | 0.1 |
| Comorbidity | |||
| Charlson comorbidity index, mean (SD) | 7.4 (3.1) | 8.1 (3.1) | 0.05 |
| Overweightb (%) | 33.2 | 34.7 | 0.6 |
| Obeseb (%) | 21.7 | 17.8 | 0.4 |
| Hypertension (%) | 78.9 | 78.1 | 0.9 |
| COPD (%) | 10.7 | 15.1 | 0.2 |
| Diabetes mellitus (%) | 35.9 | 44.8 | 0.1 |
| Smoker (%) | 16.5 | 20.2 | 0.4 |
| Neoplasm (%) | 6.8 | 2.1 | 0.08 |
| Risk factors for COVID-19 (%) | |||
| Living with COVID-19 partner | 1.5 | 7.4 | <0.001 |
| Living in nursing home | 1.6 | 9.9 | <0.001 |
| Collective/public transport | 49.8 | 61.8 | 0.03 |
| Previous hospital admission | 8.6 | 8.5 | 0.9 |
| Treatment (%) | |||
| ACEI | 15.9 | 21.1 | 0.2 |
| ARB | 18.5 | 13.8 | 0.3 |
| ACEI or ARB | 33.9 | 33.7 | 0.9 |
| MRA | 2.8 | 3.2 | 0.8 |
IQR, interquartile range.
a
Negative SARS-CoV-2 infection includes patients with negative SARS-CoV-2 RT-PCR and anti-SARS-CoV-2 antibodies. Positive SARS-CoV-2 infection includes patients with positive SARS-CoV-2 RT-PCR and/or positive anti-SARS-CoV-2 antibodies. b Overweight: body mass index 25–30 kg/m2; obese: body mass index >30 kg/m2.