Table 1. Baseline characteristics of the Analytic Sample According to Vital Status after 15 years of follow-up.
| Total | Alive | Dead | P-value | |
| (N = 5,134) | (N = 4756) | (N = 378) | ||
| N (valid %) | Age-adjusted % (95% CI) | |||
| Male | 2,342 (45.6) | 44.7 (43.3, 46.1) | 58.8 (52.8, 64.8) | <0.001 |
| Ethnic minority | 3,318 (64.6) | 64.1 (62.8, 65.5) | 65.1 (65.4, 76.1) | 0.01 |
| School grade 10 not completed | 1,053 (20.6) | 20.3 (19.1, 21.4) | 23.5 (18.6, 28.3) | 0.05 |
| Low occupational class | 1,564 (32.5) | 30.4 (29.1, 31.7) | 39.4 (33.4, 45.2) | <0.001 |
| Current regular smoker | 1,448 (35.7) | 33.9 (32.3, 35.4) | 54.9 (48.1, 61.7) | <0.001 |
| >35 alcoholic drinks weekly | 88 (2.1) | 1.9 (1.5, 2.3) | 4.4 (1.7, 7.1) | 0.01 |
| Physically inactive | 939 (28.0) | 27.5 (26.0, 29.1) | 28.9 (22.7, 35.0) | 0.09 |
| Overweight or obese | 3,000 (58.5) | 58.6 (57.3, 60.0) | 59.1 (53.0, 65.2) | 0.47 |
| C-reactive protein >3 mg/dL | 44 (0.9) | 0.8 (0.6, 1.1) | 2.0 (0.1, 3.9) | 0.18 |
| Mean (SD) | Age-adjusted mean (95% CI) | |||
| Age in years at baseline | 36.7 (11.0) | 36.1 (35.8, 36.4) | 44.3 (43.2, 45.4) | <0.001 |
| Poverty/income ratio | 2.45 (1.78) | 2.50 (2.45, 2.55) | 1.85 (1.66, 2.04) | <0.001 |
| Saturated fat, g/day | 28.9 (18.6) | 28.9 (28.3, 29.4) | 29.5 (27.5, 31.4) | 0.55 |
| Systolic blood pressure, mmHg (mean, SD) | 118.6 (14.6) | 118.2 (117.9, 118.6) | 123.8 (122.4, 125.1) | <0.001 |
| Serum cholesterol, mg/dL (mean, SD) | 5.1 (1.1) | 5.14 (5.11, 5.17) | 5.05 (4.94, 5.15) | 0.11 |
| Simple reaction time, ms (mean, SD) | 242.7 (58.0) | 242.0 (240.4, 243.6) | 251.4 (245.4, 257.3) | 0.003 |
| Reaction time variability, SD (mean, SD) | 46.3 (23.1) | 45.8 (45.1, 46.5) | 51.8 (49.5, 54.2) | <0.05 |
Note. The N and % refer to the available N and valid % (percentage of the available data) before multiple imputation of missing data prior to the Cox regression models.