Table 1.
Characteristics of case and control individuals in the Australian Melanoma Family Study and Leeds case-control study
| Characteristic | Australia, n (%) | Leeds, n (%) |
|---|---|---|
| Total, case and control individuals | 1,035 | 1,460 |
| Case individuals | 578 (56) | 964 (66) |
| Control individuals | 457 (44) | 496 (34) |
| Sex | ||
| Female | 623 (60) | 874 (60) |
| Male | 412 (40) | 586 (40) |
| Age at diagnosis/interview, years1 | ||
| 18–29 | 268 (26) | 61 (4) |
| 30–39 | 682 (66) | 198 (14) |
| 40–49 | 85 (8) | 264 (18) |
| ≥50–69 | 0 (0) | 937 (64) |
| Ethnic background2 | ||
| English | 649 (63) | 1,358 (93) |
| Scottish, Irish, Welsh | 52 (5) | 67 (5) |
| Other Northern European | 46 (4) | 6 (0) |
| Southern European | 11 (1) | 6 (0) |
| Eastern European | 238 (23) | 3 (0) |
| Mixed/other European | 39 (4) | 20 (1) |
1
Leeds case and control individuals were unselected for age at diagnosis. In Australia, all case individuals were younger than 40 years at diagnosis, and all population control individuals were younger than 40 years when ascertained. Case and control individuals could be up to age 44 years at interview for this analysis.
2
Self-reported.