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Table 3.

Association between skin damage score and leisure-time sun exposure

nUnadjusted OROR (95% CI), adjusted for age and sexFully AOR* (95% CI)
Hours per day in sun in summer (ages 6-10 y) 512 1.24 (1.09-1.42) 1.14 (1.00-1.33) 1.17 (1.01-1.35) 
P = 0.001 P = 0.06 P = 0.04 
    
Hours per day in sun in winter (ages 6-10 y) 512 1.20 (1.07-1.35) 1.14 (1.01-1.29) 1.17 (1.03-1.33) 
P = 0.002 P = 0.03 P = 0.01 
    
Cumulative leisure-time sun exposure 6-18 y (per 1,000 KJ/m2) 501 1.49 (0.88-2.52) 1.50 (0.86-2.63) 2.06 (1.15-2.67) 
P = 0.14 P = 0.15 P = 0.01 
    
Cumulative leisure-time sun exposure 6 y-current age (per 1,000 KJ/m2501 2.27 (1.90-2.70) 1.25 (1.00-1.56) 1.39 (1.11-1.75) 
P < 0.001 P = 0.05 P = 0.005 
nUnadjusted OROR (95% CI), adjusted for age and sexFully AOR* (95% CI)
Hours per day in sun in summer (ages 6-10 y) 512 1.24 (1.09-1.42) 1.14 (1.00-1.33) 1.17 (1.01-1.35) 
P = 0.001 P = 0.06 P = 0.04 
    
Hours per day in sun in winter (ages 6-10 y) 512 1.20 (1.07-1.35) 1.14 (1.01-1.29) 1.17 (1.03-1.33) 
P = 0.002 P = 0.03 P = 0.01 
    
Cumulative leisure-time sun exposure 6-18 y (per 1,000 KJ/m2) 501 1.49 (0.88-2.52) 1.50 (0.86-2.63) 2.06 (1.15-2.67) 
P = 0.14 P = 0.15 P = 0.01 
    
Cumulative leisure-time sun exposure 6 y-current age (per 1,000 KJ/m2501 2.27 (1.90-2.70) 1.25 (1.00-1.56) 1.39 (1.11-1.75) 
P < 0.001 P = 0.05 P = 0.005 

*Adjusted for age, sex, education, occupational group, buttock melanin density, and left/right cast; see text for model details.

By self-report.

Cumulative UVR dose is total UV exposure from age 6 y to current (units are 1,000 KJ/m2; range in these data, 0.51-5.87), that is, ambient UVR * self-reported time in sun.

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