Table 1.
Characteristicsof 40–49-year-old Japanese men according to tertiles of serum isoflavones (n 274) in the Electron-Beam Computed Tomography and Risk Factor Assessment among Japanese and U.S. Men in the Post World War II Birth Cohort study from 2002 to 2007
(Mean values and standard deviations; medians and interquartile ranges (IQR); percentages are presented for continuous and categorical variables; 50th and 75th percentiles)
| Tertile 1 (n 92) | Tertile 2 (n 91) | Tertile 3 (n 91) | ||||
|---|---|---|---|---|---|---|
| Mean | sd | Mean | sd | Mean | sd | |
| Range of isoflavones (nm) | 0·0–274·7 | 274·8–843·8 | 843·9–7639·5 | |||
| Age (years) | 44·7 | 2·9 | 44·7 | 2·6 | 45·5 | 2·8 |
| BMI (kg/m2) | 23·3 | 3·4 | 24·0 | 3·0 | 23·6 | 2·8 |
| Systolic BP (mmHg) | 123·2 | 14·9 | 124·6 | 17·5 | 124·8 | 15·1 |
| Hypertension (%) | 21·7 | 30·8 | 20·9 | |||
| Total cholesterol (mmol/l) | 5·6 | 1·1 | 5·7 | 0·9 | 5·6 | 0·8 |
| LDL-cholesterol (mmol/l) | 3·5 | 1·0 | 3·5 | 0·9 | 3·4 | 0·8 |
| HDL-cholesterol (mmol/l) | 1·4 | 0·3 | 1·4 | 0·4 | 1·4 | 0·4 |
| Glucose (mmol/l) | ||||||
| Median | 5·7 | 5·7 | 5·9 | |||
| IQR | 5·4, 6·1 | 5·5, 6·1 | 5·5, 6·3 | |||
| C-reactive protein (nmol/l) | ||||||
| Median | 2·6 | 3·2 | 3·1 | |||
| IQR | 1·4, 5·7 | 1·4, 6·2 | 1·4, 7·6 | |||
| Diabetes (%) | 5·4 | 3·3 | 6·6 | |||
| Current smokers (%) | 53·3 | 42·9 | 46·2 | |||
| Pack-years of smoking (years) | ||||||
| Median | 15·3 | 15·0 | 21·0 | |||
| IQR | 0·9, 28·3 | 3·0, 26·0 | 1·5, 29·0 | |||
| Alcohol (g/d) | ||||||
| Median | 13·0 | 12·0 | 14·0 | |||
| IQR | 1·8, 36·0 | 0·0, 32·0 | 4·3, 37·0 | |||
| n-3 Fatty acids (%)* | 8·1 | 2·3 | 8·8 | 3·0 | 8·3 | 2·8 |
| Meat consumption ≥ 2–3 times/week (%) | 28·3 | 19·8 | 17·6 | |||
| Education (years) | ||||||
| Median | 16·0 | 16·0 | 16·0 | |||
| IQR | 12·0, 16·0 | 12·0, 16·0 | 12·0, 16·0 | |||
| Medication | ||||||
| Hypertension (%) | 3·3 | 4·4 | 5·5 | |||
| Lipids (%) | 2·2 | 4·4 | 2·2 | |||
| Exercise ≥1 h/week (%) | 23·9 | 28·6 | 25·3 | |||
| CCS | ||||||
| 50th percentile | 0·0 | 0·0 | 0·0 | |||
| 75th percentile | 0·0, 0·5 | 0·0, 1·0 | 0·0, 1·3 | |||
| Prevalence of CCS ≥ 10 (%) | 7·6 | 13·5 | 7·7 | |||
BP, blood pressure; CCS; coronary calcium scores.
*
n-3 Fatty acids were estimated as the sum of EPA and DPA.