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Individuals vary regarding being comfortable nude in situations that are private. According to a 2004 U.S. survey by ABC News, 31% of men and 14% of women report sleeping in the nude. In a 2014 survey in the U.K., 42% responded that they felt comfortable naked and 50% responded they did not. Only 22% said they often walk around the house naked, 29% slept in the nude, and 27% had gone swimming nude. In a 2018 U.S. survey by USA Today, 58% reported that they slept in the nude; by generation 65% of Millennials, but only 39% of Baby boomers.