Behaviors associated with ultraviolet radiation exposure in a cohort of adult survivors of childhood and adolescent cancer: a report from the Childhood Cancer Survivor Study.
BACKGROUND
Previous research from the Childhood Cancer Survivor Study (CCSS) has shown that risk of skin cancer is strongly associated with exposure to radiation therapy. The potential role of ultraviolet radiation exposure in survivors has not been described.


METHODS
The CCSS is a retrospective cohort study designed to investigate late effects among 5-year survivors of children and adolescents diagnosed with cancer between 1970-1986. Data regarding current sun protection behavior were collected on 9298 survivors and 2950 sibling controls. Median age at follow-up was 31 years (range, 17-54).


RESULTS
In this cohort, childhood cancer survivors and siblings showed similar patterns of sunscreen use (67% vs 66%). Survivors were significantly less likely to report having sunbathed in the previous year (none vs any in previous year: relative risk (RR)=0.92; 95% confidence interval (CI)=0.89-0.95) or use artificial tanning (none vs any in previous year: RR=0.76; 95% CI=0.70-0.83). Compared with survivors without radiation therapy, survivors with radiation exposure showed increased use of sunscreen (RR=1.06; 95% CI=1.03-1.10), and less sunbathing (none vs any in previous year: RR=0.89; 95% CI=0.86-0.92) or artificial tanning (none vs any in previous year: RR=0.62; 95% CI=0.56-0.69). In adjusted multivariable analysis, statistically significant factors for regular sunscreen use in the past summer (vs never/rarely) in the survivor population were being female, having lighter skin complexions, having previously been examined for skin cancer, and having skin that burned when in the sun unprotected.


CONCLUSIONS
Survivors of childhood cancer self-reported lower tanning practices than siblings. However, because of the potential increased risk of skin cancer from therapy-related exposures, future research should be directed at intervention studies to further reduce UV exposures.
Buchanan
Natasha
N
Aflac Cancer Center and Blood Disorders Service, Children's Healthcare of Atlanta/Emory University, Department of Cancer Prevention, Fred Hutchinson Cancer Research Center, Atlanta, GA 30322, USA.
Leisenring
Wendy
W
Mitby
Pauline A
PA
Meadows
Anna T
AT
Robison
Leslie L
LL
Hudson
Melissa M
MM
Mertens
Ann C
AC
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D015331:Cohort Studies; D005260:Female; D006801:Humans; D007223:Infant; D008875:Middle Aged; D009369:Neoplasms / Q000523:psychology*; D011832:Radiation Injuries / Q000517:prevention & control*; D012189:Retrospective Studies; D035781:Siblings / Q000523:psychology; D012878:Skin Neoplasms / Q000517:prevention & control*; D013471:Sunburn / Q000517:prevention & control*; D013473:Sunscreening Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D017741:Survivors / Q000523:psychology*; D014466:Ultraviolet Rays
D013473:Sunscreening Agents