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Fig. 3 | BMC Public Health

Fig. 3

From: Trends in heterosexual inexperience among young adults in Japan: analysis of national surveys, 1987–2015

Fig. 3

Age-standardized prevalence of heterosexual inexperience in Japanese men by age group, 1987–2015. Footnote: Prevalence in 1987–2010 was standardized to the age distribution of 2015. Prevalence for those aged 35–39 years was not presented for 1987 as this survey did not include unmarried participants older than 34 years. Error bars represent 95% confidence intervals. Data are shown in Additional file 1: Table S10

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