To the Editor In their randomized clinical trial in a recent issue of JAMA Dermatology, Ou-Yang et al1 concluded that shade from a beach umbrella provides less effective sun protection than high-SPF sunscreen. We urge care in interpretation of this study. The results cannot be generalized to conclude that shade is an ineffective means of sun protection.
Opene C, Chren M, Linos E. Types of Shade Vary in Protection Just Like Sunscreens. JAMA Dermatol. 2017;153(10):1070–1071. doi:10.1001/jamadermatol.2017.1718
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