Table 2. Hazard ratios for the cardiovascular risk prediction model with/ without Electrocardiogram.
| Univariable with age adjustment | Interaction P with sex | Model with ECG | Model without ECG | |
|---|---|---|---|---|
| Multivariable | Multivariable | |||
| HR (95% CI) | HR (95% CI) | HR (95% CI) | ||
| Men | 1.76 (1.49, 2.08) | 1.46 (1.21, 1.75) | 1.46 (1.22, 1.76) | |
| Age, years | ||||
| 30–39 | 1.00 | 1.00 | ||
| 40–49 | 0.418 | 2.26 (1.27, 4.03) | 2.27 (1.27, 4.04) | |
| 50–59 | 0.148 | 4.00 (2.32, 6.89) | 4.05 (2.35, 6.98) | |
| 60–64 | 0.082 | 5.83 (3.36, 10.12) | 5.96 (3.43, 10.34) | |
| 65–69 | 0.092 | 9.12 (5.23, 15.90) | 9.27 (5.32, 16.16) | |
| 70–74 | 0.051 | 12.55 (7.22, 21.80) | 13.10 (7.54, 22.74) | |
| 75–79 | 0.069 | 16.80 (9.45, 29.89) | 17.36 (9.77, 30.86) | |
| SBP < 120 mmHg and DBP < 80 mmHg | 0.66 (0.52, 0.85) | 0.933 | 0.68 (0.53, 0.88) | 0.69 (0.54, 0.89) |
| SBP = 120–139 mmHg or DBP = 80–89 mmHg | 1.00 | 1.00 | 1.00 | |
| SBP = 140–159 mmHg or DBP = 90–99 mmHg | 1.34 (1.05, 1.69) | 0.968 | 1.34 (1.05, 1.70) | 1.34 (1.06, 1.70) |
| SBP ≥ 160 mmHg or DBP ≥ 100 mmHg or in-medication | 1.84 (1.49, 2.25) | 0.253 | 1.81 (1.47, 2.23) | 1.84 (1.50, 2.27) |
| Non-HDL-C < 170 mg/dL and LDL-C < 140 mg/dL | 1.00 | 1.00 | 1.00 | |
| Non-HDL-C ≥ 170 mg/dL or LDL-C ≥ 140 mg/dL | 1.13 (0.96, 1.33) | 0.918 | 1.19 (1.01, 1.41) | 1.18 (1.00, 1.39) |
| HDL-C < 40 mg/dL | 1.00 | 1.00 | 1.00 | |
| HDL-C = 40–59 mg/dL | 0.71 (0.58, 0.88) | 0.146 | 0.79 (0.64, 0.97) | 0.79 (0.65, 0.98) |
| HDL-C ≥ 60 mg/dL | 0.51 (0.40, 0.65) | 0.074 | 0.66 (0.51, 0.85) | 0.66 (0.51, 0.85) |
| Smoking | 1.66 (1.39, 1.97) | 0.258 | 1.43 (1.18, 1.74) | 1.42 (1.17, 1.72) |
| Diabetes mellitus | 2.36 (1.83, 3.05) | 0.168 | 1.89 (1.45, 2.46) | 1.95 (1.50, 2.53) |
| Urinary protein 1+ or more | 1.54 (1.28, 1.86) | 0.099 | 1.23 (1.02, 1.49) | 1.25 (1.04, 1.52) |
| Atrial fibrillation | 2.45 (1.31, 4.59) | 0.257 | 2.29 (1.21, 4.33) | |
| Left ventricular hypertrophy | 1.94 (1.32, 2.84) | 0.179 | 1.64 (1.11, 2.42) | |
Abbreviations: SBP, Systolic blood pressure; DBP, Diastolic blood pressure; LDL, Low density lipoprotein; HDL, high-density lipoprotein; Non-HDL, Non- high-density lipoprotein
When each value of blood pressures (SBP and DBP) or lipid profiles (LDL-C and non-HDL-C) belonged to different categories, we adopted the higher category to estimate hazard ratios.