Cigarette smoking and malignant melanoma: A case-control study - 10/08/11
Reprint requests: Anthony J. Alberg, PhD, Hollings Cancer Center, Medical University of South Carolina, 86 Jonathan Lucas St, PO Box 250955, Charleston, SC 29425.Abstract |
Background |
Several previous studies have reported inverse associations between cigarette smoking and melanoma. Often these studies have not adjusted for ultraviolet (UV) exposure history, skin type, or number of blistering sunburns, which could confound the observed associations between cigarette smoking and melanoma.
Objective |
We sought to assess whether this reported inverse association persists after adjusting for UV exposure, skin type, and number of blistering sunburns.
Methods |
We conducted a population-based case-control study (82 patients with melanoma, 164 control subjects). Two control subjects were matched to each patient by age, sex, race, and skin type. Conditional logistic regression models were fit to assess the association between cigarette smoking history and melanoma, with additional adjustments for UV exposure and sunburns.
Results |
Compared with never smoking, both former (odds ratio 0.43, 95% confidence interval 0.18-1.04) and current (odds ratio 0.65, 95% confidence interval 0.19-2.24) smoking were inversely associated with melanoma, but the associations were not statistically significant.
Limitations |
The number of cutaneous nevi was not assessed in this study. In addition, the relatively small number of patients limits the statistical precision of the observed associations.
Conclusions |
After matching for age, sex, race, and skin type, and further adjusting for UV exposure and number of sunburns, cigarette smoking was not statistically significantly associated with melanoma risk, but the results were consistent with previous observations of an inverse association.
Le texte complet de cet article est disponible en PDF.Key words : case-control study, cigarette smoking, epidemiology, malignant melanoma, skin cancer, tobacco
Abbreviations used : CI, NMSC, OR, UV
Plan
| Supported by RO1 CA105069 from the National Cancer Institute and a grant from the Doris Duke Charitable Foundation to Johns Hopkins University School of Medicine (Clinical Research Fellow Dr Kessides), and T32RR023258 from the National Center for Research Resources (Mr Wheless). |
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| Conflicts of interest: None declared. |
Vol 64 - N° 1
P. 84-90 - janvier 2011 Retour au numéro
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