Department of Dermatology, Stanford University School of Medicine, 450 Broadway St, Pavillion C, Redwood City, CA 94063, USA.
Cancer Causes Control. 2011 Jul;22(7):1067-71. doi: 10.1007/s10552-011-9780-1. Epub 2011 Jun 3.
Sun protection messages in the United States emphasize sunscreen use, although its efficacy in skin cancer prevention remains controversial.
We used data from NHANES 2003-2006, restricted to adult whites (n = 3,052) to evaluate how Americans protect themselves from the sun. Participants completed questionnaires on the frequency with which they used sunscreen, wore a hat, long sleeves, or stayed in the shade, in addition to the number of sunburns in the past year.
Although using sunscreen is the most common sun protective behavior (30%), frequent sunscreen use was not associated with fewer sunburns. However, the odds of multiple sunburns were significantly lower in individuals who frequently avoided the sun by seeking shade (OR = 0.70, p < 0.001) or wearing long sleeves (OR = 0.73, p = 0.01).
Our findings suggest that shade and protective clothing may be more effective than sunscreen, as typically used by Americans.
美国的防晒信息强调使用防晒霜，尽管其在预防皮肤癌方面的功效仍存在争议。
我们使用了来自 NHANES 2003-2006 的数据，限制在成年白人（n=3052）中，以评估美国人如何保护自己免受阳光伤害。参与者完成了关于他们使用防晒霜、戴帽子、穿长袖或待在阴凉处的频率的问卷，以及过去一年晒伤的次数。
虽然使用防晒霜是最常见的防晒行为（30%），但频繁使用防晒霜与较少的晒伤无关。然而，经常通过寻找阴凉处（OR=0.70，p<0.001）或穿长袖（OR=0.73，p=0.01）来避免阳光照射的人，多次晒伤的几率显著降低。
我们的发现表明，与美国人通常使用的防晒霜相比，遮荫和防护衣物可能更有效。
