Table 1.
Distribution of selected demographic factors in this cohort
| Variables | Male (n=20,680) | Female (n=20,425) | Total (n=41,105) |
|---|---|---|---|
| Age groups (yr) | |||
| 30-39 | 2,786 (13.5) | 2,566 (12.6) | 5,352 (13.0) |
| 40-49 | 7,575 (36.6) | 7,764 (38.0) | 15,339 (37.3) |
| 50-59 | 6,603 (31.9) | 6,885 (33.7) | 13,488 (32.8) |
| 60-70 | 3,716 (18.0) | 3,210 (15.7) | 6,926 (16.9) |
| Marital status | |||
| Never married | 627 (3.0) | 663 (3.2) | 1,290 (3.1) |
| Currently married | 18,039 (87.2) | 16,045 (78.6) | 34,084 (82.9) |
| Widowed | 166 (0.8) | 1,025 (5.0) | 1,191 (2.9) |
| Divorced/separated | 372 (1.8) | 792 (3.9) | 1,164 (2.8) |
| Unknown | 1,476 (7.1) | 1,900 (9.3) | 3,376 (8.2) |
| Education level | |||
| Middle school or less | 2,079 (10.1) | 3,470 (17.0) | 5,549 (13.5) |
| High school | 5,574 (27.0) | 7,666 (37.6) | 13,240 (32.3) |
| College or more | 11,257 (54.5) | 6,929 (33.9) | 18,186 (44.2) |
| Unknown | 1,770 (8.6) | 2,360 (11.6) | 4,130 (10.0) |
| Household income (1,000 Korean won/mo) | |||
| <200 | 2,256 (10.9) | 3,182 (15.6) | 5,438 (13.2) |
| 200-400 | 5,783 (28.0) | 5,271 (25.8) | 11,054 (26.9) |
| ≥400 | 9,778 (47.3) | 7,413 (36.3) | 17,191 (41.8) |
| Unknown | 2,863 (13.8) | 4,559 (22.3) | 7,422 (18.1) |
| Occupation | |||
| Professional, administration | 6,677 (32.3) | 1,870 (9.2) | 8,547 (20.8) |
| Office worker | 3,474 (16.8) | 1,416 (6.9) | 4,890 (11.9) |
| Sales, services | 3,792 (18.3) | 2,601 (12.7) | 6,393 (15.6) |
| Agriculture, manual labor | 3,255 (15.7) | 1,005 (4.9) | 4,260 (10.4) |
| Housewife | 15 (0.1) | 10,858 (53.2) | 10,873 (26.5) |
| Unemployed, retired | 1,670 (8.1) | 540 (2.6) | 2,210 (5.4) |
| Unknown | 1,797 (8.7) | 2,135 (10.5) | 3,932 (9.6) |
| Smoking status | |||
| Never smoker | 3,825 (18.5) | 16,376 (80.2) | 20,201 (49.1) |
| Ex-smoker | 7,883 (38.1) | 664 (3.3) | 8,547 (20.8) |
| Current smoker | 7,945 (38.4) | 895 (4.4) | 8,840 (21.5) |
| Unknown | 1,027 (5.0) | 2,490 (12.2) | 3,517 (8.6) |
| Alcohol consumption | |||
| Never drinker | 2,432 (11.8) | 9,808 (48.0) | 12,240 (29.8) |
| Ex-drinker | 1,308 (6.3) | 825 (4.0) | 2,133 (5.2) |
| Current drinker | 15,711 (76.0) | 7,736 (37.9) | 23,447 (57.0) |
| Unknown | 1,229 (5.9) | 2,056 (10.1) | 3,285 (8.0) |
| Family history of cancer | |||
| No | 6,567 (31.8) | 6,829 (33.4) | 13,396 (32.6) |
| Yes | 13,177 (63.7) | 12,175 (59.6) | 25,352 (61.7) |
| Missing | 936 (4.5) | 1,421 (7.0) | 2,357 (5.7) |
Values are presented as number (%).