Table 1.
Characteristics of the study population overall and stratified by ABO blood group
| Characteristic | Overall (n = 202) | Blood group | |||
|---|---|---|---|---|---|
| A (n = 65) | B (n = 39) | AB (n = 13) | O (n = 85) | ||
| Median age (IQR), years | 43 (32–56) | 48 (34–57) | 47 (36–63) | 43 (32–58) | 39 (30–50) |
| Age group, years | |||||
| 18–29 | 40 (20%) | 11 (17%) | 5 (13%) | 3 (23%) | 21 (25%) |
| 30–39 | 42 (21%) | 10 (15%) | 7 (18%) | 3 (23%) | 22 (26%) |
| 40–49 | 43 (21%) | 13 (20%) | 11 (28%) | 1 (8%) | 18 (21%) |
| 50–59 | 40 (20%) | 17 (26%) | 4 (10%) | 4 (31%) | 15 (18%) |
| ≥60 | 37 (18%) | 14 (22%) | 12 (31%) | 2 (15%) | 9 (11%) |
| Sex | |||||
| Female | 94 (47%) | 28 (43%) | 19 (49%) | 6 (46%) | 41 (48%) |
| Male | 108 (53%) | 37 (57%) | 20 (51%) | 7 (54%) | 44 (52%) |
| Race/ethnicity | |||||
| White | 154 (76%) | 52 (80%) | 26 (67%) | 11 (85%) | 65 (76%) |
| Black | 9 (4%) | 0 (0%) | 3 (8%) | 0 (0%) | 6 (7%) |
| Hispanic | 8 (4%) | 2 (3%) | 0 (0%) | 0 (0%) | 6 (7%) |
| Asian | 22 (11%) | 8 (12%) | 7 (18%) | 1 (8%) | 6 (7%) |
| Mixed/Other/Unknown | 9 (4%) | 3 (5%) | 3 (8%) | 1 (8%) | 2 (2%) |
| Hospitalized (severity) | |||||
| No | 185 (92%) | 60 (92%) | 37 (95%) | 12 (92%) | 76 (89%) |
| Yes | 15 (7%) | 4 (6%) | 2 (5%) | 0 (0%) | 9 (11%) |
| Unknown | 2 (1%) | 1 (2%) | 0 (0%) | 1 (8%) | 0 (0%) |
| Median days since PCR + (IQR) | 46 (39–56) | 43 (39–51) | 43 (35–56) | 46 (39–55) | 49 (42–59) |
Abbreviations: IQR, interquartile range; PCR, polymerase chain reaction.