Table 1. Basic characteristics of Chinese men across green tea consumption categories aged 40–79 at baseline 1990-1991.
| Amount drunk (in grams) of green tea | ||||||
|---|---|---|---|---|---|---|
| Characteristics | Overall | non-drinker | ≤5 | 5-10 | >10 | P-value |
| No. of participants | 164,681 | 135,673 | 8,288 | 11,864 | 8,856 | |
| Age (years) | 53.2(10.0) | 53.1(10.0) | 53.1(9.9) | 53.7(10.1) | 54.3(9.8) | <0.001 |
| Height (cm) | 164.3(0.6) | 164.(0.7) | 164.8(0.7) | 164.8(0.6) | 164.5(0.6) | <0.001 |
| Weight (kg) | 58.7(8.4) | 58.8(8.4) | 59.3(9.1) | 58.3(8.4) | 57.1(7.8) | <0.001 |
| SBP (mmHg) | 122.6(16.8) | 122.9(16.8) | 121.1(17.4) | 121.1(16.8) | 120.9(16.5) | <0.001 |
| DBP (mmHg) | 78.1(10.3) | 78.2(10.2) | 77.2(10.8) | 77.3(10.6) | 76.9(10.9) | <0.001 |
| Body Mass Index (BMI), Kg/m2 | ||||||
| <18.5 | 8.0 | 7.3 | 9.1 | 9.4 | 11.2 | |
| 18.5-24.9 | 82.9 | 83.5 | 79.0 | 82.5 | 82.7 | <0.001 |
| 25.0-29.9 | 8.8 | 8.9 | 11.3 | 7.5 | 6.0 | |
| ≥30.0 | 0.5 | 0.5 | 0.6 | 0.6 | 0.3 | |
| Married status, % | 91.6 | 90.9 | 94.6 | 95.4 | 94.7 | <0.001 |
| Urban locality, % | 21.5 | 20.7 | 39.1 | 23.4 | 14.0 | <0.001 |
| Education <6 years, % | 69.8 | 71.5 | 73.0 | 73.5 | 75.6 | <0.001 |
| Job status | ||||||
| Employed | 20.4 | 19.7 | 35.8 | 20.8 | 15.1 | <0.001 |
| Smoking status,% | ||||||
| Never | 29.2 | 31.5 | 25.6 | 15.9 | 14.5 | |
| Current | 67.0 | 64.8 | 68.5 | 79.8 | 82.1 | <0.001 |
| Former | 3.8 | 3.7 | 5.8 | 4.3 | 3.4 | |
| Alcohol drinking status,% | ||||||
| Non-regular | 67.2 | 69.5 | 61.9 | 55.9 | 52.1 | |
| Moderate | 19.0 | 17.0 | 25.0 | 30.7 | 28.0 | <0.001 |
| Heavy | 13.8 | 13.5 | 13.1 | 13.4 | 20.0 | |
| Weekly dietary consumption | ||||||
| Fish | ||||||
| None | 78.3 | 78.1 | 70.7 | 79.6 | 86.6 | |
| 1-3 times/week | 13.5 | 12.8 | 24.7 | 15.9 | 10.2 | |
| 4-7 times/week | 2.8 | 2.7 | 3.7 | 3.5 | 2.6 | <.0001 |
| ≥8 times/week | 5.4 | 6.4 | 0.9 | 1.0 | 0.6 | |
| Meat | ||||||
| None | 21.8 | 24.6 | 10.9 | 10.0 | 5.3 | |
| 1-3 times/week | 50.5 | 48.6 | 49.3 | 62.1 | 65.2 | |
| 4-7 times/week | 16.6 | 15.3 | 26.9 | 19.6 | 23.3 | <.0001 |
| ≥8 times/week | 11.1 | 11.5 | 12.9 | 8.2 | 6.1 | |
| Domestic poultry | ||||||
| None | 86.0 | 86.0 | 81.4 | 85.7 | 90.8 | |
| 1-3 times/week | 12.7 | 12.6 | 17.9 | 13.3 | 8.4 | |
| 4-7 times/week | 1.1 | 1.2 | 0.8 | 0.7 | 0.7 | <.0001 |
| ≥8 times/week | 0.2 | 0.2 | 0.1 | 0.2 | 0.1 | |
| Egg | ||||||
| None | 51.4 | 51.4 | 45.6 | 54.3 | 58.2 | |
| 1-3 times/week | 32.7 | 32.7 | 33.9 | 32.6 | 32.5 | <.0001 |
| 4-7 times/week | 14.6 | 14.9 | 19.1 | 12.0 | 8.6 | |
| ≥8 times/week | 1.3 | 1.3 | 1.4 | 1.2 | 0.7 | |
| Milk | ||||||
| None | 93.9 | 94.1 | 90.3 | 93.3 | 95.5 | |
| 1-3 times/week | 2.4 | 2.4 | 3.3 | 2.3 | 1.5 | <.0001 |
| 4-7 times/week | 3.5 | 3.3 | 6.2 | 4.2 | 2.9 | |
| ≥8 times/week | 0.1 | 0.1 | 0.2 | 0.2 | 0.1 | |
| Black tea drinker, % | 8.0 | 9.5 | 2.8 | 1.1 | 0.6 | <0.001 |
| Jasmine tea drinker, % | 11.0 | 12.9 | 6.0 | 1.3 | 0.6 | <0.001 |
| Other tea, drinker % | 3.3 | 4.0 | 0.7 | 0.2 | 0.3 | <0.001 |
Note: continuous variables represented as mean (standard deviation); Categorical variables represented as percentage P-value was calculated using analysis of variance test for continuous variables and chi-square test for categorical variables.