Results obtained from the cardiac questionnaire
| Angina pectoris | |
| Yes | 66 (8.8) |
| No | 659 (87.9) |
| Does not know | 25 (3.3) |
| Arythmia | |
| Yes | 105 (14) |
| No | 622 (82.9) |
| Does not know | 23 (3.1) |
| Cardiac insufficiency | |
| Yes | 47 (6.3) |
| No | 678 (90.4) |
| Does not know | 25 (3.3) |
| Myocardial infarction | |
| Yes | 39 (5.2) |
| No | 693 (92.4) |
| Does not know | 18 (2.4) |
| Angioplasty | |
| Yes | 17 (2.3) |
| No | 719 (95.9) |
| Does not know | 14 (1.9) |
| Coronary bypass | |
| Yes | 22 (2.9) |
| No | 714 (95.2) |
| Does not know | 14 (1.9) |
| Cardiac surgery | |
| Yes | 19 (2.5) |
| No | 718 (95.7) |
| Does not know | 13 (1.7) |
Data are presented as n (%).