Table 1. Included and excluded participants.
| Risk Factor | Included N = 3009 | Excluded N = 645 | p-value |
| Age (years) | 65.5 (9.2) | 69.5 (11.5) | <0.0001 |
| Systolic blood pressure (mmHg) | 146.1 (21.3) | 146.6 (22.9) | 0.59 |
| Hematocrit (%) | 14.9 (1.3) | 14.7 (1.5) | 0.10 |
| Hemoglobin (g/dL) | 0.44 (0.04) | 0.43 (0.05) | 0.15 |
| Red cell count (106/µL) | 4.8 (0.4) | 4.8 (0.5) | 0.09 |
| White cell count (103/µL) | 6.5 (1.8) | 6.7 (1.9) | 0.11 |
| Platelet count (103/µL) | 262.7 (63.4) | 259.8 (68.1) | 0.52 |
| Female | 57.0 | 55.2 | 0.39 |
| Diabetes | 7.9 | 7.1 | 0.45 |
| Current smoker | 14.6 | 16.1 | |
| Ex-smoker | 35.6 | 29.3 | |
| Never-smoker | 49.8 | 54.6 | 0.01 |
Numbers are means (standard deviations) or %.