Clinical and demographic characteristics of patients undergoing long-term dialysis in Ontario with and without a diagnosis of SARS-CoV-2 infection, as of Aug. 20, 2020
| Characteristic | No. (%) of patients with SARS-CoV-2 infection | No. (%) of patients without SARS-CoV-2 infection | Standardized difference, %* |
|---|---|---|---|
| All patients | 187 (NA) | 12 314 (NA) | |
| Modality | 40 | ||
| In-centre hemodialysis | 166 (88.8) | 9159 (74.4) | |
| Home dialysis | 21 (11.2) | 3155 (25.6) | |
| Years on dialysis | 13 | ||
| 0–5 | 138 (73.8) | 9754 (79.2) | |
| > 5 | 49 (26.2) | 2560 (20.8) | |
| Resident of LTC | 61 | ||
| No | 140 (74.9) | 11 753 (95.4) | |
| Yes | 47 (25.1) | 561 (4.6) | |
| Geographic location | 66 | ||
| Greater Toronto Area | 151 (80.7) | 6293 (51.1) | |
| Outside the Greater Toronto Area | 36 (19.3) | 6021 (48.9) | |
| Sex | 3 | ||
| Female | 72 (38.5) | 4909 (39.9) | |
| Male | 115 (61.5) | 7405 (60.1) | |
| Age group, yr | 6 | ||
| 18–49 | 25 (13.4) | 1654 (13.4) | |
| 50–64 | 57 (30.5) | 3427 (27.8) | |
| ≥ 65 | 105 (56.1) | 7233 (58.7) | |
| Age, yr | 3 | ||
| Median (IQR), yr | 68 (58–78) | 68 (57–77) | |
| Range | 20–92 | 18–102 | |
| Ethnicity | 59 | ||
| White | 61 (32.6) | 7265 (59.0) | |
| Black | 38 (20.3) | 889 (7.2) | |
| Indian subcontinent | 24 (12.8) | 1177 (9.6) | |
| Other non-White | 57 (30.5) | 2675 (21.7) | |
| Missing/unknown | 7 (3.7) | 308 (2.5) | |
| Diabetes | 3 | ||
| Yes | 86 (46.0) | 5872 (47.7) | |
| Cancer | 7 | ||
| Yes | 10 (5.3) | 856 (7.0) | |
| Cardiac disease | 2 | ||
| Yes | 53 (28.3) | 3587 (29.1) | |
| Previous transplant | 13 | ||
| Yes | 7 (3.7) | 807 (6.6) | |
| Income quintiles† | 35 | ||
| 1 (lowest) | 69 (36.9) | 3639 (29.6) | |
| 2 | 49 (26.2) | 2752 (22.3) | |
| 3 | 42 (22.5) | 2348 (19.1) | |
| 4 | 15 (8.0) | 1901 (15.4) | |
| 5 (highest) | 12 (6.4) | 1606 (13.0) | |
| Missing/unknown | 0 (0.0) | 68 (0.6) |
Note: IQR = interquartile range, LTC = long-term care, NA = not available, SARS-CoV-2 = severe acute respiratory syndrome coronavirus 2.
↵* Accepted criteria for determining a meaningful difference is a standardized difference greater than 10% and is indicated in boldface type.
↵† Income quintile is a measure of neighbourhood socioeconomic status that divides the population into 5 income groups of equal size in which group 1 lives in the neighbourhoods with the lowest incomes and group 5 in those with the highest incomes.