Table I.
Baseline characteristics by green tea consumption habits, the SMHSa
| Regular green tea consumption | |||
| Characteristics | All participants | No | Yes |
| No. of participants | 60 567 | 20 212 | 40 355 |
| Age (years) | 54.9 (9.7) | 56.3 | 54.2 |
| Education (high school and above), % | 58.8 | 57.6 | 59.4 |
| Ever smoked regularly, % | 69.5 | 52.6 | 78.0 |
| Ever drank alcohol regularly, % | 33.6 | 22.1 | 39.4 |
| Exercised regularly, % | 35.5 | 38.6 | 34.0 |
| Family history of colorectal cancer, % | 2.1 | 2.1 | 2.1 |
| History of diabetes, % | 6.3 | 6.2 | 6.3 |
| Body Mass Index (kg/m2) | 23.7 (3.1) | 23.6 | 23.8 |
| Vegetable intake (g/day) | 343.7 (192.1) | 336.2 | 347.0 |
| Fruit intake (g/day) | 151.5 (125.7) | 156.1 | 149.2 |
| Red meat intake (g/day) | 63.1 (44.1) | 58.6 | 65.4 |
a
Unless otherwise indicated, data are expressed as the mean (standard deviation). All tests for differences between green tea drinkers and non-drinkers were statistically significant (P < 0.05), except for history of diabetes and family history of colorectal cancer.