ArticleBMC public health2019
Trends in heterosexual inexperience among young adults in Japan: analysis of national surveys, 1987-2015.
Article in BMC public health, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed, 44 citations in OpenAlex.
- Prevalence and Associated Factors of Erectile Dysfunction in Japanese Adolescent and Young Adult (AYA) Male Cancer Survivors.International journal of urology : official journal of the Japanese Urological Association · 2026Article
- Sexual intercourse frequency and fecundability in the Norwegian mother, father and child cohort study.PloS one · 2026Article
- Science and sensitivity in the study of not having sex.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Life without sex: Large-scale study links sexlessness to physical, cognitive, and personality traits, socioecological factors, and DNA.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Choosiness as a Predictor of Sexual (In)frequency in Single Heterosexual Adults.Archives of sexual behavior · 2025Article
- Sexual health care barriers and HIV/STI prevention for transgender people in Japan.Global health & medicine · 2024Article
- Estimation of self-funded human papillomavirus vaccine recipients from Japan's previously assumed "unvaccinated generation".Cancer science · 2024Article
- Factors associated with lifetime use of commercial sex work services among Japanese men aged 20-49: findings from a quasi-representative national survey, 2022.Sexually transmitted infections · 2024Article
- Changes in Penile-Vaginal Intercourse Frequency and Sexual Repertoire from 2009 to 2018: Findings from the National Survey of Sexual Health and Behavior.Archives of sexual behavior · 2022Article
- Article
- Relationships between Penile-Vaginal Intercourse Frequency and Condom/Contraceptive Use from 2009 to 2018: Findings from the National Survey of Sexual Health and Behavior.International journal of sexual health : official journal of the World Association for Sexual Health · 2022Article
- Behavioral impact of national health campaigns on healthy lifestyle practices among young adults in Singapore: a cross-sectional study.BMC public health · 2021Article
- Household income and medical help-seeking for fertility problems among a representative population in Japan.Reproductive health · 2021Article
- An Analysis of the Trend of Fetal Mortality Rates among Working and Jobless Households in Japan, 1995-2019.International journal of environmental research and public health · 2021Article
- Rare case of penile fracture caused by an injury to the crus penis: Delayed repair using the transperineal approach.IJU case reports · 2021Article
- Trends in Frequency of Sexual Activity and Number of Sexual Partners Among Adults Aged 18 to 44 Years in the US, 2000-2018.JAMA network open · 2020Article
- Trends in sexual activity and demand for and use of modern contraceptive methods in 74 countries: a retrospective analysis of nationally representative surveys.The Lancet. Global health · 2020Article
- Article
- Prevalence and types of sexual inactivity in Britain: analyses of national cross-sectional probability survey data.BMJ open · 2019Article
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Authors and funding
6 authors at 2 institutions in 3 countries.
Funding
Abstract
backgroundIt has been suggested that an increasing number of Japanese adults remain sexually inexperienced; however, no study has assessed this issue using nationally representative data.
methodsWe used data from seven rounds of the National Fertility Survey of Japan, 1987-2015, and included adults aged 18-39 years (18-34 years in the 1987 survey) in the analyses (sample size 11,553-17,850 [1987-2010]; response rate 70.0-92.5%). For each survey year, sex and age group, we estimated the age-adjusted prevalence of heterosexual inexperience, defined as reporting no experience of sexual intercourse with someone of the opposite sex. We used logistic regression, adjusted for age, to identify factors associated with heterosexual inexperience in the 2010 survey. Information about same-sex sexual experience was not available.
resultsBetween 1992 and 2015, the age-standardized prevalence of heterosexual inexperience in adults aged 18-39 years increased from 21.7 to 24.6% for women (p-values for linear and quadratic trend < 0.05) and from 20.0 to 25.8% for men (p-values for trend < 0.05). Among those aged 30-34 years, the prevalence was 6.2% in 1987 and 11.9% in 2015 for women (p-values for trend ≥0.05) and 8.8% (1987) and 12.7% (2015) for men (p-values for trend ≥0.05). Among those aged 35-39 years, prevalence increased from 4.0% in 1992 to 8.9% in 2015 among women (p-values for trend < 0.05). The corresponding numbers for men in the same age group were 5.5 and 9.5%, respectively (p-values for trend ≥0.05). Among men aged 25-39 years, unemployment, temporary/part-time employment and lower income were associated with heterosexual inexperience.
conclusionsThe proportion of young Japanese adults with no experience of heterosexual intercourse had increased in the past two decades. Among adults in their thirties, around one in ten had no heterosexual experience. Unemployment, temporary/part-time employment and low income were associated with heterosexual inexperience among men. Further research is needed on the factors contributing to and the potential public health and demographic implications of the high proportion of the Japanese population that remains sexually inexperienced well into adult age.
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