| Factor | NHI n=133 (%) | HI n=23 (%) | p-value | Test |
| Demographics | ||||
| Age at implant (years)T | 53.7 ± 2.4 | 49.7 ± 6.4 | 0.198 | t-test |
| Sex (male) | 107 (80.5) | 15 (65.2) | 0.102 | Chi-square |
| Ethnicity | ||||
| Caucasian | 103 (77.4) | 19 (82.6) | 0.810 | Chi-square |
| African American | 29 (21.8) | 4 (17.4) | ||
| Asian | 1 (0.8) | 0 (0) | ||
| Pump Type | ||||
| Continuous | 116 (87.2) | 20 (87.0) | 0.972 | Chi-square |
| Pulsatile | 17 (12.8) | 3 (13.0) | ||
| Premorbid medical history | ||||
| Stroke | 21 (15.8) | 9 (39.1) | 0.009 | Chi-square |
| Diabetes Mellitus | 56 (42.1) | 8 (34.8) | 0.510 | Chi-square |
| Hypertension | 97 (72.9) | 17 (73.9) | 0.922 | Chi-square |
| Dyslipidemia | 95 (71.4) | 12 (52.2) | 0.066 | Chi-square |
| Premorbid or current tobacco | 88 (66.2) | 12 (52.2) | 0.197 | Chi-square |
| Antiplatelet and anticoagulation | ||||
| Aspirin | 107 (80.5) | 18 (78.3) | 0.887 | Chi-square |
| Clopidogrel | 11 (8.3) | 3 (13.0) | 0.460 | Chi-square |
| Anticoagulation | 100 (75.2) | 20 (87.0) | 0.216 | Chi-square |
| Duration of VAD support | ||||
| Mean (days)T | 699.3 ± 100.5 | 898.0 ± 245.7 | 0.134 | t-test |
| >2 years | 54 (40.6) | 15 (65.2) | 0.021 | Chi-square |
| All cause mortality | 66 (49.6) | 21 (91.3) | < 0.001 | Chi-square |