Variable | Content type | Before IARC report | After IARC report | χ2(df = 1) and significance | ||
---|---|---|---|---|---|---|
Text (n = 755) | % | (No./349)a | % | (No./406)a | ||
Image (n = 1267) | % | (No./553)a | % | (No./714)a | ||
Skin cancer risk factors | ||||||
UV exposure | Text | 39 | (137) | 40 | (163) | 0.06, p = .803 |
Image | 4 | (21) | 3 | (21) | 0.71, p = .398 | |
Light skin | Text | 15 | (51) | 12 | (50) | 0.86. p = .355 |
Image | 11 | (62) | 15 | (109) | 4.39, p = .036* | |
Moles | Text | 10 | (33) | 13 | (52) | 2.11, p = .146 |
Image | 6 | (31) | 5 | (35) | 0.31, p = .576 | |
History of skin cancer | Text | 8 | (28) | 10 | (41) | 0.97, p = .324 |
Image | 0 | (0) | 0 | (0) | n/a | |
Sunburns | Text | 10 | (34) | 11 | (44) | 0.24, p = .622 |
Image | <1 | (3) | 1 | (9) | 1.71, p = .191 | |
UV behaviors | ||||||
Tanned look | Text | 36 | (125) | 25 | (103) | 9.72, p = .002** |
Image | 45 | (250) | 37 | (262) | 9.38, p = .002** | |
Self-tanners | Text | 31 | (107) | 22 | (89) | 7.46, p = .006** |
Image | 21 | (116) | 13 | (89) | 16.65, p < .001*** | |
Solar UV avoidance | Text | 19 | (65) | 12 | (48) | 6.82, p = .009** |
Image | 12 | (64) | 14 | (104) | 1.82, p = .177 | |
Discourages indoor tanning | Text | 16 | (54) | 18 | (71) | 0.55, p = .458 |
Image | 1 | (5) | 1 | (7) | 0.02, p = .889 | |
Promotes indoor tanning | Text | 2 | (6) | 2 | (7) | 0.00, p = .996 |
Image | 2 | (10) | 3 | (14) | 0.04, p = .843 | |
Promotes shade | Text | 8 | (28) | 8 | (33) | 0.00, p = .958 |
Image | 8 | (46) | 7 | (48) | 1.16, p = .282 | |
Promotes hats | Text | 16 | (54) | 14 | (58) | 0.21, p = .647 |
Image | 10 | (53) | 9 | (61) | 0.41, p = .521 | |
Promotes clothes | Text | 14 | (48) | 13 | (52) | 0.15, p = .702 |
Image | 9 | (48) | 8 | (54) | 0.53, p = .469 | |
Promotes sunscreen | Text | 57 | (199) | 69 | (280) | 11.55, p < .001*** |
Image | 19 | (104) | 22 | (154) | 1.47, p = .226 | |
SPF level (30+)b | Text | 39 | (69) | 60 | (127) | 15.65, p < .001*** |
Image | 61 | (45) | 82 | (90) | 9.99, p = .002** | |
Early detection | ||||||
ABCD criteria | Text | 5 | (19) | 7 | (30) | 1.17, p = .279 |
Image | 2 | (10) | 2 | (11) | 0.13, p = .724 | |
Skin self-examination | Text | 16 | (54) | 19 | (75) | 1.19, p = .287 |
Image | 6 | (35) | 6 | (45) | 0.02, p = .903 | |
Physician-led skin examination | Text | 18 | (62) | 21 | (85) | 1.20, p = .311 |
Image | 1 | (6) | 1 | (6) | 0.20, p = .656 |