Table 1 Baseline characteristics of 980 participants according to the case and control status
From: Healthy lifestyle, DNA methylation age acceleration, and incident risk of coronary heart disease
Baseline characteristics | Cases (n = 491) | Controls (n = 489) |
|---|---|---|
Matched factors | ||
Age, year | 51.1 | 49.9 |
Female, % | 43.6 | 43.8 |
Urban area, % | 20.6 | 20.4 |
Fasting time, h | 4.0 | 4.0 |
Middle school and above, % | 44.6 | 44.4 |
Married, % | 90.3 | 94.1 |
Family history of heart attack, % | 6.9 | 4.7 |
Lifestyle factors | ||
Daily tobacco smoker, % | 46.5 | 40.2 |
Daily alcohol drinker, % | 8.9 | 10.1 |
Physical activity, MET-h/day | 22.3 | 23.7 |
Dietary habits | ||
Days consumed fresh vegetables/week | 6.8 | 6.7 |
Days consumed fresh fruits/week | 1.7 | 2.2 |
Days consumed red meat/week | 2.9 | 3.0 |
Adiposity | ||
Body mass index, kg/m2 | 23.9 | 23.3 |
Waist circumference, cm | 82.2 | 79.7 |
Waist-to-hip ratio | 0.91 | 0.88 |
Fat percentage, % | 27.1 | 25.8 |
Prevalent hypertension, % | 52.0 | 30.6 |
Prevalent diabetes, % | 9.6 | 4.7 |
Total cholesterol, mmol/L | 4.7 | 4.5 |