Table 4

Correlates of persistent indoor tanning among female indoor tanners age 31 and over (n = 170)

% Persistently

Tanned

Univariate

Multivariate

Characteristic

N

Indoors

OR (95% CI)

P valuea

N

OR (95% CI)

P valueb


Eye color

Brown

71

28

1.00

0.431

Hazel

36

28

0.98 (0.40 - 2.40)

Green

14

29

1.02 (0.29 - 3.63)

Blue/grey

49

16

0.50 (0.20 - 1.25)

Skin color

Olive

33

27

1.00

0.902

Fair

106

24

0.82 (0.34 2.0)

Very fair

31

26

0.93 (0.31 - 2.82)

Skin reaction with first summer sun exposure

Sunburn

76

18

1.00

0.085

Tan

94

30

1.88 (0.91 - 3.90)

Skin reaction with prolonged sun exposure

Deep Tan

35

40

1.00

0.023

35

1.00

0.031

No/Mild/Moderate Tan

135

21

0.39 (0.18 - 0.87)

135

0.39 (0.16 - 0.91)

BMI (kg/m2)

170

-

1.02 (0.96 - 1.08)

0.535

Pounds Gained since age 18 (per 10 lbs)

170

-

1.14 (0.86 - 1.49)

0.364

Alcoholic drinks under age 25 (per 300 drinks)

170

-

1.05 (1.01 - 1.09)

0.015

170

1.05 (1.01 -1.09)

0.015

Alcoholic drinks/year over age 25 (per 100 drinks)

170

-

1.09 (0.96 - 1.23)

0.156

Smoking Status

Not Current Smoker

144

23

1.00

0.217

Current Smoker

26

35

1.78 (0.73 - 4.37)

Education

Less than Bachelor's Degree

57

39

1.00

0.003

57

1.00

0.002

Bachelor's Degree or more

113

18

0.34 (0.17 - 0.70)

113

0.29 (0.14 -0.63)

Sunbathing session ages 8-15 (per 50 sessions)

170

-

1.09 (0.99 - 1.21)

0.087

Sunbathing session ages 16-25 (per 50 sessions)

170

-

1.10 (1.01 - 1.20)

0.033

170

1.10 (1.00 -1.21)

0.044

Sunbathing session ages 26+ (per 50 sessions)

169

-

1.09 (0.99 - 1.20)

0.086

Age at skin biopsy

170

-

0.93 (0.80 - 1.08)

0.344


aP values are from likelihood ratio tests comparing a model with the variable of interest to the null model.

bP values are from likelihood ratio tests comparing the full model to the full model minus the variable of interest.

BMI body mass index; CI confidence interval; OR odds ratio

Lostritto et al. BMC Public Health 2012 12:118   doi:10.1186/1471-2458-12-118

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