Time trends in sexual harassment exposure among adolescents in Norway between 2017 and 2021

BACKGROUND: Sexual harassment is linked to a range of negative psychosocial factors such as depressive symptoms, anxiety, self-harm, low self-esteem, and substance-use. Preventing and reducing sexual harassment is therefore important in a public health perspective. There is a large variety in the reported prevalence of sexual harassment among adolescents, and knowledge about the development over time is limited. The aim of this study is to study time trends in sexual harassment between 2017 and 2021 among adolescents (aged 16-19) in Norway. METHODS: This study is based on cross-sectional data from the Ungdata Survey carried out in upper secondary schools in Norway from 2017 to 2021. Adolescents completing the survey these years were respectively; 2017: n = 43 163, 2018: n = 30 400, 2019: n = 54 981, 2020: n = 17 467, 2021: n = 56 544. Descriptive analysis and Chi-square test were used to study changes in sexual harassment exposure across years according to sex, age and sexual experience. Logistic regression was used to study possible changes in the association between sexual harassment and depressive symptoms. RESULTS: Preliminary results indicated a stable trend in exposure to all types of sexual harassment (touching, sexual name calling and negative sexual rumours). Approximately 31 % of the adolescents had experienced one or more of the types of sexual harassment (2017 30.7 % - 2021 30.5%). The time trend was stable according to sex, age, and sexual experience. Adolescents exposed to sexual harassment had higher odds for depressive symptoms than adolescents not exposed to sexual harassment (ranging from OR: 1.4, 95% CI:1.2-1.6 to OR:2.3, 95% Cl: 1.8-2.9), and this association was also stable over the years. CONCLUSIONS: The prevalence of sexual harassment among adolescents is high and surprisingly stable between 2017 and 2021. More knowledge about time trends in sexual harassment is needed, and new public health strategies to prevent sexual harassment should be developed. KEY MESSAGES: • The prevalence of exposure to sexual harassment among adolescents seems to be stable over time. • Being aware the negative public health consequences of sexual harassment more effort needs to be made in developing effective prevention strategies.