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March 2011

Alcohol Intake and Risk of Psoriasis: Smoking as a Confounding Factor—Reply

Author Affiliations

Author Affiliations: Channing Laboratory (Drs Qureshi, Li, and Han), Department of Medicine, and Department of Dermatology (Drs Qureshi and Han), Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.

Arch Dermatol. 2011;147(3):358-359. doi:10.1001/archdermatol.2011.16

In reply

The association between alcohol intake and risk of incident psoriasis is an interesting finding of our study published recently in the Archives,1 particularly with respect to nonlight beer intake. As is the case with any epidemiologic study, there are several limitations to consider, the most important of which is that this is a single study, and the findings need to be replicated. Although we found a significant association with overall alcohol intake and then nonlight beer, the relative risks were significant only in the highest category of drinkers. Another limitation is the small number of cases in the highest category of alcohol or nonlight beer drinkers.

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