Patient characteristics
| No of patients | 292 |
| Sex | |
| Female, n (%) | 152 (51.7) |
| Male, n (%) | 140 (46.9) |
| Race | |
| African American, n (%) | 85 (29.1) |
| White, n (%) | 198 (67.8) |
| Other, n (%) | 9 (3) |
| Median age (range) | 71 (28–98 years) |
| Comorbidities | |
| Chronic kidney disease, n (%) | 125 (42.8) |
| Haemodialysis, n (%) | 37 (12.7) |
| Mechanical ventilation, n (%) | 44 (15.1) |
| Intensive care unit patient, n (%) | 102 (34.9) |
| History of COPD, n (%) | 95 (32.5) |
| Average INR (range) | 1.3 (0.9–3.1) |
| Average platelet count (range) | 238 X10∧9/L (33X10∧9/L–755X10∧9/L) |
| Medications increasing risk of bleeding | |
| Unfractionated heparin, n (%) | 146 (50%) |
| NOAC, n (%) | 24 (8.2%) |
| Clopidogrel, n (%) | 32 (11%) |
| Enoxaparin, n (%) | 17 (5.8%) |
| Warfarin, n (%) | 11 (3.8%) |
COPD, chronic obstructive pulmonary disease; INR, international normalised ratios; NOAC, novel anticoagulants.