Table 2.
Demographic and clinical characteristics of patients on hemodialysisa
| Characteristics | Serological test for
SARS-CoV-2 antibody |
|
|---|---|---|
| Negative, n = 1490 | Positive, n = 51 | |
| Age, yrs, n (%) | ||
| <40 | 197 (13.2) | 0 (0) |
| 40−64 | 794 (53.3) | 23 (45.1) |
| ≥65 | 499 (33.5) | 28 (54.9) |
| Sex, n (%) | ||
| Male | 844 (56.7) | 30 (58.8) |
| Female | 646 (43.3) | 21 (41.2) |
| Smoking, n (%) | ||
| Never | 843 (63.4) | 21 (48.8) |
| Current | 162 (12.2) | 6 (14.0) |
| Former | 325 (24.4) | 16 (37.2) |
| Region, n (%) | ||
| Hubei province | 943 (63.3) | 35 (68.6) |
| Guangdong province | 547 (36.7) | 16 (31.4) |
| Etiology of ESKD, n (%) | ||
| Glomerulonephritis | 376 (25.2) | 11 (21.6) |
| DKD | 200 (13.4) | 8 (15.7) |
| Hypertension | 325 (21.8) | 11 (21.6) |
| Obstructive nephropathy | 43 (2.9) | 2 (3.9) |
| Hereditary renal disease | 55 (3.7) | 2 (3.9) |
| Other | 86 (5.8) | 2 (3.9) |
| Unknown | 405 (27.2) | 15 (29.4) |
| Dialysis yrs, mean (SD) | 3.6 (6.6) | 3.4 (3.5) |
| Comorbidities, n (%) | ||
| Hypertension | 1104 (74.1) | 36 (70.6) |
| Diabetes | 268 (18.0) | 12 (23.5) |
| Coronary heart disease | 121 (8.1) | 7 (13.7) |
| Malignant tumor | 19 (1.3) | 0 (0) |
| CT findings, n (%) | ||
| Signs of lung infection | 296 (30.6) | 24 (58.5) |
| No signs of lung infection | 672 (69.4) | 17 (41.5) |
| Respiratory symptoms, n (%) | ||
| Yes | 21 (1.6) | 2 (4.7) |
| No | 1329 (98.4) | 41 (95.3) |
| Serum albumin, g/l, n (%) | ||
| <35 | 115 (12.4) | 11 (32.4) |
| ≥35 | 810 (87.6) | 23 (67.6) |
| Hemoglobin, g/l, n (%) | ||
| <90 | 318 (22.3) | 9 (18.0) |
| ≥90 | 1109 (77.7) | 41 (82.0) |
| Leukocyte count, 109/l, n (%) | ||
| >10 | 64 (4.5) | 3 (6.1) |
| 4–10 | 1172 (82.3) | 38 (77.6) |
| <4 | 188 (13.2) | 8 (16.3) |
| Lymphocyte count, 109/l, n (%) | ||
| ≥1 | 788 (55.5) | 21 (42.9) |
| <1 | 632 (44.5) | 28 (57.1) |
| C-reactive protein, mg/l, n (%) | ||
| ≥10 | 147 (20.4) | 8 (24.2) |
| <10 | 575 (79.4) | 25 (75.8) |
CT, computed tomography; DKD, diabetic kidney disease; ESKD, end-stage kidney disease; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.
Signs of lung infection on CT included ground-glass opacity, local or bilateral patchy shadowing. Symptoms included fever, cough, sputum, and dyspnea. For some clinical features, the sample size of all subgroups may not sum up to the total sample size because of missing values.
a
One participant was excluded from analysis due to missing data on sex, age, and comorbidities.