Table 1.
Participant characteristics.
| Characteristics | Total (n=124) | Control (n=41) | SunSmart App (n=41) | Ultraviolet radiation monitor (n=42) | |
| Mean age in years | 25.8 | 25.4 | 26.5 | 25.4 | |
| Gender, n (%) | |||||
|
|
Female | 85 (68.5) | 26 (63.4) | 32 (78.0) | 27 (64.3) |
|
|
Male | 39 (31.5) | 15 (36.6) | 9 (22.0) | 15 (35.7) |
| Highest completed education, n (%) | |||||
|
|
Completed high school | 21 (16.9) | 8 (19.5) | 7 (17.1) | 6 (14.3) |
|
|
Trade or technical certificate or diploma | 12 (9.7) | 6 (14.6) | 3 (7.3) | 3 (7.1) |
|
|
University or college degree | 91 (73.4) | 27 (65.9) | 31 (75.6) | 33 (78.6) |
| Current work situation, n (%) | |||||
|
|
Employed full-time | 24 (19.4) | 9 (22.0) | 9 (22.0) | 6 (14.3) |
|
|
Part-time or casual | 20 (16.1) | 6 (14.6) | 8 (19.5) | 6 (14.3) |
|
|
Student | 80 (64.5) | 26 (63.4) | 24 (58.5) | 30 (71.4) |
| Is your main job now…, n (%) | |||||
|
|
Mainly indoors | 109 (87.9) | 38 (92.7) | 35 (85.4) | 36 (85.7) |
|
|
Mainly outdoors | 2 (1.6) | N/Aa | 1 (2.4) | 1 (2.4) |
|
|
About equal amounts indoors and outdoors | 13 (10.5) | 3 (7.3) | 5 (12.2) | 5 (11.9) |
| Born in Australia, n (%) | |||||
|
|
Yes | 58 (46.8) | 20 (48.8) | 20 (48.8) | 18 (42.9) |
|
|
No | 66 (53.2) | 21 (51.2) | 21 (51.2) | 24 (57.1) |
| Eye color, n (%) | |||||
|
|
Blue or gray | 28 (22.6) | 9 (22.0) | 13 (31.7) | 6 (14.2) |
|
|
Green | 16 (12.9) | 5 (12.2) | 4 (9.8) | 7 (16.7) |
|
|
Brown | 65 (52.4) | 24 (58.5) | 19 (46.3) | 22 (52.4) |
|
|
Otherb | 15 (12.1) | 3 (7.3) | 5 (12.2) | 7 (16.7) |
| Natural hair color at the age of 21 years (or now if younger), n (%) | |||||
|
|
Red (including auburn) | 7 (5.6) | 3 (7.3) | 2 (4.9) | 2 (4.8) |
|
|
Fair or blonde (including white) | 8 (6.4) | 1 (2.5) | 4 (9.7) | 3 (7.1) |
|
|
Light brown | 25 (20.2) | 8 (19.5) | 10 (24.4) | 7 (16.7) |
|
|
Dark brown | 42 (33.9) | 16 (39.0) | 10 (24.4) | 16 (38.1) |
|
|
Black | 42 (33.9) | 13 (31.7) | 15 (36.6) | 14 (33.3) |
| Skin color, n (%) | |||||
|
|
Fair | 72 (58.1) | 24 (58.6) | 21 (51.2) | 27 (64.3) |
|
|
Medium | 38 (30.6) | 13 (31.7) | 15 (36.6) | 10 (23.8) |
|
|
Olive or dark | 13 (10.5) | 3 (7.3) | 5 (12.2) | 5 (11.9) |
|
|
Black | 1 (0.8) | 1 (2.4) | N/A | N/A |
| Skin reaction in strong summer sun for 30 minutes without protection, n (%) | |||||
|
|
My skin would not burn at all | 10 (8.1) | 5 (12.2) | 1 (2.5) | 4 (9.5) |
|
|
My skin would burn lightly | 44 (35.5) | 13 (31.7) | 13 (31.7) | 18 (42.9) |
|
|
My skin would burn moderately | 47 (37.9) | 15 (36.6) | 16 (39.0) | 16 (38.1) |
|
|
My skin would burn severely | 23 (18.5) | 8 (19.5) | 11 (26.8) | 4 (9.5) |
| Skin reaction if you spend several weeks at the beach and you are often in the strong sun, without any protection, n (%) | |||||
|
|
My skin would not tan | 10 (8.0) | 4 (9.8) | 2 (4.9) | 4 (9.5) |
|
|
My skin would tan lightly | 25 (20.2) | 8 (19.5) | 8 (19.5) | 9 (21.5) |
|
|
My skin would tan moderately | 60 (48.4) | 21 (51.2) | 18 (43.9) | 21 (50.0) |
|
|
My skin would tan deeply | 29 (23.4) | 8 (19.5) | 13 (31.7) | 8 (19.0) |
| Previous skin cancer, mole, or other spot(s) removed or treated, n (%) | |||||
|
|
Yes | 15 (12.1) | 5 (12.2) | 7 (17.1) | 3 (7.1) |
|
|
No | 108 (87.1) | 36 (87.8) | 34 (82.9) | 38 (90.5) |
|
|
Unsure or do not know | 1 (0.8) | N/A | N/A | 1 (2.4) |
aN/A: not applicable.
bOther: mixed or undefined eye color.