15 Behavioral Surveillance Indicators Increasing the use of sun protection and decreasing the prevalence of sunburn and indoor tanning are critical to preventing future cases of skin cancer. These behavioral surveillance indicators can provide timely information about our progress in reducing exposure to harmful UV exposure. The latest data on use of sun protection (shade, clothing, wide-brimmed hats, and sunscreen), indoor tanning, and sunburn among US adults are available from the Cancer Control Supplement of the 2015 National Health Interview Survey (NHIS). The most recent data on sunscreen use, indoor tanning, and sunburn among US high school students are available from the 2013 and 2017 national Youth Risk Behavior Survey (YRBS). Sun Protection According to the 2013 YRBS (the latest year for which data are available), 10.1% of high school students use sunscreen with an SPF of 15 or higher when outside for more than 1 hour on a sunny day. 17 Sunscreen use was higher among girls (13.2%) than boys (6.9%). The prevalence of sunscreen use among high school students did not change significantly from 2005 to 2013. Although use of sun protection appears to be increasing slightly among adults (Figure 4), there is still room for improvement. Sun protection strategies differ by sex, and more than one-quarter of women and one-third of men do not consistently use any form of sun protection (Figure 5). Figure 4. Percentage of US Adults Who Protect Themselves from the Sun Always or Most of the Time, by Sex and Age, 2005, 2008, 2010, 2015 Figure 4. Percent ge f US Adults W o Pr tect Themselves from the Sun Always or Most of the Time, by Sex and Age, 2005, 2008, 2010, 2015 40 45 50 55 60 65 70 75 80 2005 2008 2010 2015 Percentage Males, Ages 18–24 Females, Ages 25+ Females, Ages 18–24 Healthy People 2020 Males, Ages 25+ Overall Source: National Health Interview Survey. 2 Note: Data are age-adjusted to the 2000 US Standard Population. Ages 18–24 are age-adjusted using age groups 18–19 and 20–24. Ages ≥25 are age-adjusted using age groups 25–34, 35–44, 45–64, and ≥65.