Number (percentage) of men and women with various lifestyle related characteristics and with pre-existing disease at the time of entry to the study
| Men | Women | |
|---|---|---|
| Number of subjects | 4102 | 6700 |
| Median age at entry (years) | 34 | 33 |
| Diet group | ||
| Meat eater | 2147 (52.3) | 2751 (41.1) |
| Semi-vegetarian | 387 (9.4) | 962 (14.4) |
| Vegetarian/vegan | 1568 (38.2) | 2987 (44.6) |
| Smoking habits | ||
| Never smoked | 1787 (43.6) | 4021 (60.0) |
| Ex-smoker | 1302 (31.7) | 1588 (23.7) |
| Current smoker | ||
| < 10 cigarettes/day | 531 (12.9) | 487 (7.3) |
| ⩾ 10 cigarettes/day | 482 (11.8) | 604 (9.0) |
| Body mass index (kg/m2) | ||
| < 20 | 592 (14.4) | 1777 (26.5) |
| 20– | 1560 (38.0) | 2804 (41.9) |
| 22.5– | 1259 (30.7) | 1425 (21.3) |
| ⩾ 25 | 691 (16.8) | 694 (10.4) |
| Social class | ||
| I–II | 2190 (53.4) | 3040 (45.4) |
| III–V | 1088 (26.5) | 2017 (30.1) |
| Others | 824 (20.1) | 1643 (24.5) |
| Pre-existing disease1-150 | ||
| No | 3832 (93.4) | 6148 (91.8) |
| Yes | 270 (6.6) | 552 (8.2) |
↵1-150 Angina, heart disease, hypertension, diabetes or stroke.