Characteristics of cases and controls
| Cases | Controls | |
| Women, n (%) | 2547 (71) | 4122 (71) |
| Men, n (%) | 1025 (29) | 1650 (29) |
| Swedish, n (%) | 3001 (84) | 4745 (82) |
| Overweight, n (%) Obesity, n (%) | 1239 (35) 521 (15) | 1978 (34) 741 (13) |
| Smoking, n (%) | 2393 (67) | 3184 (55) |
| University degree, n (%) | 941 (26) | 1742 (30) |
| Alcohol drinkers, n (%)* | 2733 (77) | 4745 (82) |
| Total, n | 3572 | 5772 |
| Age at disease onset (SD) | 52.1 (13.0) | |
| Duration between disease onset and inclusion in the study (SD) | 0.9 (1.3) |
*Alcohol drinkers were those who consumed alcohol at the time of the index year.