Table I.
Final multivariate model of variables associated with combination tanning vs. single-modality tanning
| Variable | Single-modality tanners (n = 726) | Combination tanners (n = 1216) | Adjusted odds ratio | 95% confidence interval | P value |
|---|---|---|---|---|---|
|
| |||||
| Sex | |||||
| Male (ref) | 294 (40.5) | 221 (18.2) | 1.00 | ||
| Female | 431 (59.5) | 991 (81.8) | 3.75 | 2.88–4.88 | <.0001 |
| Race | |||||
| White (ref) | 496 (68.3) | 1057 (86.9) | 1.00 | ||
| Black or African American | 109 (15) | 42 (3.5) | 0.20 | 0.12–0.33 | <.0001 |
| Other | 121 (16.7) | 117 (9.6) | 0.59 | 0.41–0.84 | <.01 |
| Alabama resident | |||||
| No (ref) | 174 (24.0) | 240 (19.8) | 1.00 | ||
| Yes | 551 (76.0) | 974 (80.2) | 1.50 | 1.14–1.97 | <.01 |
| Fitzpatrick skin type | |||||
| I + II | 111 (15.3) | 179 (14.7) | 0.92 | 0.60–1.43 | .72 |
| III | 200 (27.5) | 459 (37.8) | 1.33 | 0.91–1.95 | .15 |
| IV | 245 (33.8) | 421 (34.6) | 1.18 | 0.83–1.68 | .35 |
| V + VI (ref) | 170 (23.4) | 157 (12.9) | 1.00 | ||
| Family history of melanoma | |||||
| No (ref) | 523 (72.0) | 939 (77.2) | |||
| Yes | 55 (7.6) | 104 (8.6) | 0.71 | 0.47–1.09 | .10 |
| Don’t know/not sure | 148 (20.4) | 173 (14.2) | 0.56 | 0.41–0.76 | <.001 |
| College year | |||||
| Freshman (ref) | 175 (24.1) | 198 (16.3) | 1.00 | ||
| Sophomore | 157 (21.6) | 256 (21.0) | 1.64 | 1.17–2.36 | <.01 |
| Junior | 203 (28.0) | 337 (27.7) | 1.70 | 1.21–2.37 | <.01 |
| Senior | 191 (26.3) | 425 (35.0) | 2.57 | 1.85–3.58 | <.0001 |
| Intend to tan indoors within the next 12 months | |||||
| No (ref) | 717 (98.2) | 789 (64.9) | 1.00 | ||
| Yes | 9 (1.2) | 427 (35.1) | 23.72 | 11.89–47.33 | <.0001 |
| Ever seen/heard about risks of tanning beds | |||||
| No (ref) | 119 (16.4) | 81 (6.7) | 1.00 | ||
| Yes | 605 (83.6) | 1132 (93.3) | 1.62 | 1.11–2.37 | .01 |
| Looks better to be tan than pale | |||||
| Strongly agree | 69 (9.5) | 294 (24.2) | 3.48 | 1.84–6.58 | <.0001 |
| Agree | 269 (37.2) | 524 (43.1) | 2.30 | 1.30–4.08 | <.01 |
| Neutral | 255 (35.2) | 273 (22.5) | 1.55 | 0.87–2.78 | .14 |
| Disagree | 83 (11.5) | 96 (7.9) | 1.75 | 0.93–3.29 | .08 |
| Strongly disagree (ref) | 48 (6.6) | 28 (2.3) | 1.00 | ||
| Using a tanning bed is fine if not too frequent | |||||
| Strongly agree | 17 (2.3) | 85 (7.0) | 6.44 | 3.00–13.85 | <.0001 |
| Agree | 155 (21.4) | 408 (33.7) | 2.49 | 1.71–3.61 | <.0001 |
| Neutral | 202 (27.9) | 317 (26.2) | 1.82 | 1.28–2.57 | <.001 |
| Disagree | 203 (28.0) | 267 (22.1) | 1.38 | 0.99–1.93 | .06 |
| Strongly disagree (ref) | 148 (20.4) | 134 (11.1) | 1.00 | ||
ref, Reference.