RT Journal Article SR Electronic T1 Sexual and reproductive health and attitudes towards sex of young adults in China JF BMJ Sexual & Reproductive Health JO BMJ Sex Reprod Health FD British Medical Journal Publishing Group SP e13 OP e21 DO 10.1136/bmjsrh-2020-200766 VO 48 IS e1 A1 Siyu Zou A1 Wenzhen Cao A1 Yawen Jia A1 Zhicheng Wang A1 Xinran Qi A1 Jiashu Shen A1 Kun Tang YR 2022 UL http://jfprhc.bmj.com/content/48/e1/e13.abstract AB Background The study aimed to discuss the importance of socioeconomic status (SES) and family sexual attitudes and investigate their association with sexual and reproductive health in a large sample of Chinese young adults.Methods We analysed a large sample of 53 508 youth aged 15–24 years from an internet-based survey from November 2019 to February 2020. Multivariable logistic regression analyses were employed to examine the association between SES, family sexual attitudes, and sexual and reproductive health (SRH), stratified by sex and adjusting for potential confounders.Results Individuals with the highest expenditure were more likely to engage in early sexual intercourse (female: OR 4.19, 95% CI 3.00 to 5.87; male: OR 3.82, 95% CI 2.84 to 5.12). For both sexes, the likelihood of young adult sexual risk-taking such as first intercourse without using a condom, acquiring sexually transmitted infections, and pregnancy was lower in those with higher maternal educational attainment, whereas it was higher in those with open family sexual attitudes.Conclusions Lower SES and open family attitudes toward sex had a significant association with a range of adverse young adulthood SRH outcomes. Public health policies should focus on more deprived populations and advocate suitable parental participation to reduce risky sexual behaviours in youth.The data that support the findings of this study are available on reasonable request from the corresponding author (KT). The data are not publicly available due to research ethics board restrictions.