Table 1.
Demographics of the unmatched and matched cohorts of people with and without COVID‐19
| Unmatched cohorts | Matched cohorts | |||||
|---|---|---|---|---|---|---|
| COVID‐19 Cohort | Non‐COVID‐19 cohort | Standardized difference | COVID‐19 Cohort | Non‐COVID‐19 cohort | Standardized difference a | |
| n = 5620 | n = 2,656,654 | n = 5617 | n = 11,225 | |||
| Demographics | ||||||
| Age (median, IQR) | 81 (73–88) | 74 (70–81) | 0.52 | 81 (73–88) | 81 (72–88) | 0b |
| Female, N (%) | 2134 (38.0%) | 1,417,611 (53.4%) | 0.31 | 2134 (38.0%) | 4268 (38.0%) | 0b |
| Highest income quintile | 1586 (28.2%) | 543,536 (20.5%) | 0.18 | 1585 (28.2%) | 2827 (25.2%) | 7% |
| Lowest income quintile | 914 (16.3%) | 536,212 (20.2%) | 0.1 | 914 (16.3%) | 1951 (17.4%) | 3% |
| Residing in long term care, N (%) | 2851 (50.7%) | 60,142 (2.3%) | 1.31 | 2848 (50.7%) | 5687 (50.7%) | 0b |
| Comorbidities in the previous 2 years, N (%) | ||||||
| COPD | 459 (8.2%) | 144,742 (5.4%) | 0.11 | 459 (8.2%) | 923 (8.2%) | 0 |
| Diabetes | 1563 (27.8%) | 523,953 (19.7%) | 0.19 | 1562 (27.8%) | 2420 (21.6%) | 15% |
| Congestive heart failure | 655 (11.7%) | 129,219 (4.9%) | 0.25 | 654 (11.6%) | 982 (8.7%) | 9% |
| Hypertension | 2275 (40.5%) | 759,355 (28.6%) | 0.25 | 2274 (40.5%) | 3170 (28.2%) | 26% |
| Heart disease | 311 (5.5%) | 96,015 (3.6%) | 0.09 | 310 (5.5%) | 501 (4.5%) | 5% |
| Stroke/TIA | 584 (10.4%) | 72,057 (2.7%) | 0.31 | 584 (10.4%) | 880 (7.8%) | 9% |
| Obesity | 138 (2.5%) | 53,402 (2.0%) | 0.03 | 138 (2.5%) | 149 (1.3%) | 8% |
| Chronic kidney disease | 366 (6.5%) | 108,554 (4.1%) | 0.11 | 365 (6.5%) | 537 (4.8%) | 7% |
| Cancer | 409 (7.3%) | 187,737 (7.1%) | 0.01 | 409 (7.3%) | 709 (6.3%) | 4% |
| Prior urologist visit | 615 (10.9%) | 260,107 (9.8%) | 0.04 | 615 (10.9%) | 1049 (9.3%) | 5% |
Abbreviations: IQR, interquartile range; COPD, chronic obstructive pulmonary disease; COVID‐19, coronavirus disease 2109; TIA, transient ischemic attack.
Standardized differences are better at demonstrating potentially clinically relevant differences (>10%) between large groups.
The variables age, sex, and residing in long‐term care were used to create the matched cohorts.
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