Table 1.
Participant Characteristics and Control Group.
| Study group (count, %) | Control group (count, %) | |||||
|---|---|---|---|---|---|---|
| Men | Women | Total | Men | Women | Total | |
| Asymptomatic/mild | 16 (73%) | 36 (72%) | 52 (72%) | — | — | — |
| Moderate | 2 (9%) | 8 (16%) | 10 (14%) | — | — | — |
| Severe/critical | 4 (18%) | 6 (12%) | 10 (14%) | — | — | — |
| Total | 22 | 50 | 72 | 4 | 7 | 11 |
| Hospitalized | 6 (27.3%) | 14 (28%) | 20 (27.8%) | — | — | — |
| Age, years | ||||||
| <40 | 3 (14%) | 11 (22%) | 14 (19%) | 3 (75%) | 4 (57%) | 7 (64%) |
| 40–49 | 1 (5%) | 3 (6%) | 4 (6%) | 0 (0%) | 0 (0%) | 0 (0%) |
| 50–59 | 7 (32%) | 12 (24%) | 19 (26%) | 1 (25%) | 1 (14%) | 2 (18%) |
| 60–69 | 8 (36%) | 15 (30%) | 23 (32%) | 0 (0%) | 2 (29%) | 2 (18%) |
| ≥70 | 3 (14%) | 9 (18%) | 12 (17%) | 0 (0%) | 0 (0%) | 0 (0%) |
| Total | 22 | 50 | 72 | 4 | 7 | 11 |
| Comorbidities | ||||||
| Vascular comorbidities | ||||||
| Age >70 years | 3 (14%) | 8 (16%) | 11 (15%) | — | — | — |
| BMI >35 | 5 (23%) | 9 (18%) | 14 (19%) | 0 (0%) | 1 (14%) | 1 (9%) |
| HTN | 6 (27%) | 18 (36%) | 24 (33%) | 0 (0%) | 1 (14%) | 1 (9%) |
| Hyperlipidemia | 8 (38%) | 9 (18%) | 17 (24%) | 2 (50%) | 2 (29%) | 4 (36%) |
| Diabetes | 4 (18%) | 5 (10%) | 9 (13%) | — | — | — |
| Coronary artery disease | 4 (19%) | 2 (4%) | 6 (8%) | — | — | — |
| Stroke | 0 (0%) | 1 (2%) | 1 (1%) | — | — | — |
| Renal disease | 2 (9%) | 1 (2%) | 3 (4%) | 0 (0%) | 1 (14%) | 1 (9%) |
| Other comorbidities | ||||||
| Deep vein thrombosis | 0 (0%) | 4 (9%) | 4 (6%) | — | — | — |
| Pulmonary embolism | 1 (5%) | 1 (2%) | 2 (3%) | — | — | — |
| Anticoagulation | ||||||
| Lung disease | 9 (41%) | 17 (34%) | 26 (36%) | 0 (0%) | 1 (14%) | 1 (9%) |
| Home O2 therapy | 2 (9%) | 4 (8%) | 6 (8%) | — | — | — |
| Liver disease | 0 (0%) | 2 (4%) | 2 (3%) | 0 (0%) | 1 (14%) | 1 (9%) |
Note. BMI = body mass index; HTN = hypertension.