24 2019 Skin Cancer Prevention Progress Report Table 4 Prevalence of Indoor Tanninga Among Adults, 2010, 2013, and 2015 Characteristic 2010, % 2013, % 2015, % P valueb All Races 5.5 4.2 3.5 <.001 Sex 2010, % 2013, % 2015, % P valueb Male 2.2 1.7 1.6 .004 Female 8.6 6.5 5.2 <.001 Age in Years 2010, % 2013, % 2015, % P valueb 18–29 11.3 8.6 6.0 <.001 30–39 5.9 5.5 4.4 .004 40–49 5.9 4.3 3.8 <.001 ≥50 2.1 1.5 1.8 .287 Racial/Ethnic Group 2010, % 2013, % 2015, % P valueb Non-Hispanic white 7.4 5.7 4.9 <.001 Black 0.3c 0.2c 0.2c .507 Hispanic 1.8 1.7 1.2 .063 Other 2.0 1.2 0.8 .033 Non-Hispanic White Females by Age in Years 2010, % 2013, % 2015, % P valueb 18–21 31.8 21.6 20.4 .011 22–25 29.6 27.0 13.9 <.001 26–29 22.1 17.3 13.8 .009 Source: National Health Interview Survey; table adapted from Guy GP Jr, et al., 2017.22 a Indoor tanning defined as using an indoor tanning device (such as a sunlamp, sunbed, or tanning booth) one or more times during the 12 months before the survey. It does not include getting a spray-on tan. Estimates are based on weighted data. Sample sizes are unweighted and may not add to the total because of missing data. Percentages are based on weighted population estimates. b P value based on linear contrast for trend among the estimates over the 3 years. P < .05 is defined as statistically significant. c Estimates based on fewer than 30 observations or with a relative standard error >.30 are considered unreliable by the standards of the National Center for Health Statistics.
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