Table 1.
Characteristics of the study population in China
| Characteristics | Study population |
|---|---|
| Age, mean, y | 42.4 (42.2–42.7) |
| Male, % | 50.2 (49.3–51.1) |
| Rural residents, % | 77.4 (76.8–77.9) |
| Income, mean, 1,000 RMB per year | 9.3 (9.1–9.5) |
| ≥ High school education, % | 32.1 (31.3–32.9) |
| Health insurance, % | 93.5 (93.1–93.9) |
| Nonhabitual drinker, % | 17.2 (16.5–17.9) |
| Habitual drinker, % | 5.8 (5.4–6.2) |
| Nonhabitual smoker, % | 2.2 (1.9–2.4) |
| Habitual smoker, % | 22.8 (22.0–23.6) |
| Occupational physical activity, % | |
| Mild | 45.5 (44.5–46.5) |
| Moderate | 32.8 (31.8–33.7) |
| Heavy | 21.8 (20.9–22.6) |
| Exercise ≥3.5 hours/week, % | 17.8 (17.1–18.5) |
| DASH score, mean | 18.8 (18.8–18.9) |
| Chronic use of NSAIDS, % | 3.5 (3.2–3.9) |
| History of cardiovascular disease, % | 2.0 (1.8–2.3) |
| Diabetes, % | 5.0 (4.6–5.3) |
| Family history of hypertension, % | 19.3 (18.6–20.0) |
| Systolic blood pressure, mean, mm Hg | 125.2 (124.9–125.6) |
| Diastolic blood pressure, mean, mm Hg | 80.1 (79.9–80.3) |
| BMI, mean, kg/m2 | 23.5 (23.5–23.6) |
| BMI group, %, kg/m2 | |
| <18.5 | 4.9 (4.5–5.3) |
| 18.5–24.0 | 55.2 (54.3–56.1) |
| 24.0–28.0 | 29.3 (28.5–30.1) |
| ≥28.0 | 10.6 (10.1–11.2) |
| Waist circumference, mean, cm | 80.6 (80.4–80.8) |
| Central obesity, %a | 42.4 (41.5–43.3) |
The data are presented as weighted prevalence (95% confidence intervals) for categorical variables and weighted mean (95% confidence intervals) for continuous variables.
Abbreviations: BMI, body mass index; DASH, Dietary Approaches to Stop Hypertension; NSAIDS, nonsteroidal anti-inflammatory drugs; RMB, Ren Min Bi.
aCentral obesity: waist circumference ≥85cm in men or ≥80cm in women.