Table 1. Baseline Characteristics of Study Participants.
| Characteristic | Participants, No. (%) | ||
|---|---|---|---|
| All (N = 238) | Control (n = 119) | Intervention (n = 119) | |
| Age, median (IQR), y | 55 (43-65) | 56 (47-67) | 54 (42-62) |
| Women | 131 (55.0) | 72 (60.5) | 59 (49.6) |
| Ethnicity | |||
| White British | 227 (95.4) | 116 (97.5) | 111 (93.3) |
| All other ethnic groups | 11 (4.6) | 3 (2.5) | 8 (6.7) |
| Education | |||
| None | 23 (9.7) | 12 (10.1) | 11 (9.2) |
| Secondary school qualifications | 109 (45.8) | 58 (48.7) | 51 (42.9) |
| University degree | 106 (44.5) | 49 (41.2) | 57 (47.9) |
| Employment | |||
| Retired | 71 (29.8) | 38 (31.9) | 33 (27.7) |
| Not in work | 21 (8.8) | 12 (10.1) | 9 (7.6) |
| Working part-time | 50 (21.0) | 24 (20.2) | 26 (21.8) |
| Working full-time | 96 (40.3) | 45 (37.8) | 51 (42.9) |
| Williams melanoma risk score, mean (SD) | 31.8 (6.3) | 31.7 (5.7) | 32.0 (6.8) |
| Hair color | |||
| Dark brown | 41 (17.2) | 18 (15.1) | 23 (19.3) |
| Light brown | 104 (43.7) | 54 (45.4) | 50 (42.0) |
| Blonde | 52 (21.8) | 26 (21.8) | 26 (21.8) |
| Red | 41 (17.2) | 21 (17.6) | 20 (16.8) |
| Raised moles | |||
| 0 | 41 (17.2) | 22 (18.5) | 19 (16.0) |
| 1 | 39 (16.4) | 18 (15.1) | 21 (17.6) |
| 2 | 24 (10.1) | 16 (13.4) | 8 (6.7) |
| ≥3 | 134 (56.3) | 63 (52.9) | 71 (59.7) |
| Freckles | |||
| None | 12 (5.0) | 8 (6.7) | 4 (3.4) |
| A few | 62 (26.1) | 27 (22.7) | 35 (29.4) |
| Several | 51 (21.4) | 27 (22.7) | 24 (20.2) |
| A lot | 113 (47.5) | 57 (47.9) | 56 (47.1) |
| Times sunburned in childhood | |||
| 0 | 30 (12.6) | 16 (13.4) | 14 (11.8) |
| 1-4 | 106 (44.5) | 53 (44.5) | 53 (44.5) |
| 5-9 | 55 (23.1) | 28 (23.5) | 27 (22.7) |
| ≥10 | 47 (19.7) | 22 (18.5) | 25 (21.0) |
| History of melanoma | 12 (5.0) | 5 (4.2) | 7 (5.9) |
| History of basal cell carcinoma | 26 (10.9) | 11 (9.2) | 15 (12.6) |
| History of squamous cell carcinoma | 5 (2.1) | 4 (3.4) | 1 (0.8) |
Abbreviation: IQR, interquartile range.