Table 1 Relative index of inequality (hazard ratio*; 95% CI) for the relation of IQ and established risk factors with total and cardiovascular
disease mortality (n = 4166)
| Risk factors | Age | Age, army income, place of service and ethnicity | Multiple adjustment† |
| Total mortality (233 deaths) | |||
| Family income | 7.46 (4.54 to 12.3) | 5.37 (3.21 to 8.98) | 4.07 (2.33 to 7.11) |
| AGTT-2 | 4.41 (2.77 to 7.03) | 2.66 (1.58 to 4.48) | 1.03 (0.55 to 1.93) |
| Smoking | 4.02 (2.37 to 6.83) | 3.59 (2.11 to 6.11) | 2.27 (1.31 to 3.95) |
| Educational attainment | 3.81 (2.35 to 6.17) | 3.05 (1.85 to 5.02) | 1.81 (0.97 to 3.38) |
| Pulse rate | 3.40 (2.14 to 5.41) | 3.39 (2.14 to 5.37) | 2.53 (1.57 to 4.08) |
| AGTT-1 | 3.26 (2.06 to 5.15) | 1.80 (1.07 to 3.01) | 0.67 (0.36 to 1.24) |
| Occupational prestige | 3.02 (1.90 to 4.79) | 2.24 (1.39 to 3.61) | 1.05 (0.60 to 1.84) |
| Fasting blood glucose | 1.69 (1.08 to 2.66) | 1.58 (1.01 to 2.47) | 1.41 (0.87 to 2.26) |
| Systolic blood pressure | 1.66 (1.06 to 2.60) | 1.45 (0.93 to 2.27) | 1.37 (0.75 to 2.50) |
| HDL cholesterol | 1.66 (1.06 to 2.60) | 2.03 (1.29 to 3.20) | 1.92 (1.18 to 3.10) |
| Diastolic blood pressure | 1.59 (1.02 to 2.50) | 1.34 (0.86 to 2.10) | 1.03 (0.57 to 1.87) |
| Total cholesterol | 1.07 (0.68 to 1.67) | 1.07 (0.68 to 1.68) | 0.91 (0.58 to 1.43) |
| Body mass index | 0.91 (0.58 to 1.43) | 0.91 (0.58 to 1.41) | 0.61 (0.36 to 1.01) |
| CVD mortality (61 deaths) | |||
| Family income | 6.58 (2.54 to 17.1) | 5.18 (1.92 to 14.0) | 4.26 (1.45 to 12.5) |
| Total cholesterol | 5.55 (2.16 to 14.2) | 5.42 (2.11 to 13.9) | 3.94 (1.52 to 10.2) |
| Body mass index | 5.12 (2.01 to 13.0) | 4.87 (1.93 to 12.3) | 2.54 (0.87 to 7.43) |
| AGTT-2 | 4.70 (1.89 to 11.7) | 3.21 (1.17 to 8.86) | 1.23 (0.36 to 4.19) |
| Fasting blood glucose | 4.29 (1.70 to 10.8) | 3.97 (1.58 to 9.96) | 2.19 (0.82 to 5.82) |
| HDL cholesterol | 4.08 (1.63 to 10.2) | 4.96 (1.97 to 12.5) | 2.87 (1.06 to 7.76) |
| Occupational prestige | 3.97 (1.61 to 9.82) | 3.30 (1.30 to 8.39) | 1.64 (0.54 to 4.91) |
| Smoking | 3.96 (1.42 to 11.0) | 3.85 (1.37 to 10.8) | 2.82 (0.97 to 8.19) |
| Educational attainment | 3.29 (1.30 to 8.32) | 2.78 (1.07 to 7.21) | 1.28 (0.38 to 4.32) |
| AGTT-1 | 2.88 (1.19 to 6.97) | 1.75 (0.65 to 4.74) | 0.53 (0.16 to 1.75) |
| Pulse rate | 2.88 (1.17 to 7.09) | 2.87 (1.17 to 7.04) | 1.26 (0.49 to 3.22) |
| Systolic blood pressure | 2.75 (1.13 to 6.69) | 2.52 (1.04 to 6.12) | 1.40 (0.43 to 4.59) |
| Diastolic blood pressure | 2.31 (0.95 to 5.61) | 2.07 (0.85 to 5.02) | 0.78 (0.25 to 2.47) |
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*The hazard ratios show the mortality hazard of the most disadvantaged men with the most advantaged (that is, extreme ends of the risk factor distribution); †adjustment for all variables in the table with the exception of IQ-wave-1 and IQ-wave-2 which are not mutually adjusted.
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AGTT-1, Army General Technical Test at army entry; AGTT-2, Army General Technical Test in middle age; CVD, cardiovascular disease; HDL, high-density lipoprotein.
