Table 1.
Baseline Characteristics of IHD Cases and Subcohort Participants in CKB
| IHD Cases (n = 1937) | Subcohort (n = 2026) | |
|---|---|---|
| Demographic and socioeconomic factors | ||
| Age, y | 63.8 ± 9.2 | 51.2 ± 10.3 |
| Female | 37.9 | 62.1 |
| Urban resident | 46.0 | 50.6 |
| ≥6 y education | 51.9 | 52.1 |
| Household income ≥35,000 yuan/y | 15.7 | 19.2 |
| Medical history and medicationa | ||
| Hypertension | 20.1 | 9.8 |
| Diabetes | 8.7 | 3.1 |
| Blood pressure–lowering medication | 34.9 | 32.6 |
| Medication for diabetes | 82.0 | 75.9 |
| Lifestyle factors | ||
| Physical activity, MET-h | 19.0 ± 10.4 | 21.3 ± 14.4 |
| Ever-regular smoker | ||
| Male | 82.8 | 74.9 |
| Female | 6.5 | 3.3 |
| Regular alcohol drinker | ||
| Male | 38.3 | 44.5 |
| Female | 5.8 | 2.9 |
| Clinical measurements | ||
| SBP, mm Hg | 138.9 ± 24.5 | 130.5 ± 21.4 |
| DBP, mm Hg | 81.7 ± 12.7 | 78.0 ± 11.0 |
| BMI, kg/m2 | 24.3 ± 3.8 | 23.8 ± 3.4 |
| WC, cm | 82.4 ± 10.6 | 80.2 ± 9.9 |
| RBG, mmol/L | 6.8 ± 3.9 | 6.1 ± 2.2 |
| Fasting time, h | 5.2 ± 4.4 | 5.0 ± 5.0 |
Values are mean ± SD or %. All values are adjusted for age, sex, and region, where appropriate.
BMI = body mass index; DBP = diastolic blood pressure; MET = metabolic equivalent of task h/d; RBG = random blood glucose; SBP = systolic blood pressure; WC = waist circumference.
a
Medical history was based on self-report of physician-diagnosed conditions, with use of medication restricted to those reporting relevant conditions.