Table 1 Demographics and patient characteristics, comparing mean values by categorical HIA status
|  | Overall | HIA negative (OD < 0.400) | HIA positive (OD ≥ 0.400) | HIA positive and HNP > 50% | HIA strong positive (OD ≥ 1.000) |
|---|---|---|---|---|---|
Age (years; mean ± SD) | 54 ± 15 | 52 ± 14 | 55 ± 15 | 56 ± 20 | 64 ± 13 |
Female sex (%) | 53 | 53 | 52 | 55 | 30* |
Body mass index (kg/m2; mean ± SD) | 28.8 ± 8.2 | 32 ± 8.3 | 28.5 ± 7.7 | 27.8 ± 8.3 | 27.4 ± 5.1 |
Time on dialysis (months; mean ± SD) | 16.3 ± 29.1 | 17.8 ± 27.3 | 12.5 ± 33.0 | 13.3 ± 36.4 | 8.3 ± 25.1 |
Ever smoker (%) | 33.3 | 35.1 | 29.2 | 24.2 | 18.2* |
History of cancer (%) | 9.7 | 9.2 | 7.1 | 3.1* | 9.1 |
Race (%) | |||||
 African American | 81 | 81 | 81 | 76 | 72* |
 Caucasian | 13 | 13 | 12 | 12 | 28* |
 Other | 6 | 6 | 7 | 12 | 0* |