Outcome of recruitment of cases and controls (Skin Health Study)
| Cases | Controls | |
|---|---|---|
| n (%) | n (%) | |
| Total from cancer registry (cases) or from drivers license list (controls) | 2,026 (100.0) | 3,095 (100.0) |
| Unable to determine eligibility | ||
| Total | 557 (27.5) | 1,354 (43.7) |
| No phone available | 164 | 598 |
| Not reached by phone | 71 | 273 |
| Subject refused | 79 | 468 |
| Physician refusal | 124 | — |
| Died | 23 | 15 |
| Nonparticipating institution | 93 | — |
| Other | 3 | — |
| Respondent not eligible | ||
| Total | 89 (4.4) | 151 (4.9) |
| Prior melanoma | 76 | 14 |
| Noncutaneous melanoma | 2 | — |
| Not melanoma | 1 | — |
| Not residing in Minnesota | 0 | 63 |
| Language/other | 10 | 74 |
| Respondents screened and eligible | ||
| Total | 1,380 (68.1) | 1,590 (51.4) |
| Did not return self-administered questionnaire | 186 (13.5) | 447 (28.1) |
| Did not return | 128 | 269 |
| Refused | 55 | 174 |
| Died | 2 | 1 |
| Other | 1 | 3 |
| Did not complete telephone interview | 27 (1.9) | 42 (2.7) |
| Not reached | 17 | 26 |
| Refused/incomplete | 9 | 14 |
| Died/incapable | 1 | 2 |
| Completed self-administered questionnaire and telephone interview | 1,167 (84.6) | 1,101 (69.2) |