Research
Print page Print page
Switch language
Rigshospitalet - a part of Copenhagen University Hospital
Published

Age at first intercourse, number of partners and sexually transmitted infection prevalence among Danish, Norwegian and Swedish women: estimates and trends from nationally representative cross-sectional surveys of more than 100 000 women

Research output: Contribution to journalJournal articleResearchpeer-review

DOI

  1. Pregnancy loss. A 40-year nationwide assessment

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Human papilloma virus vaccination and its real-life efficacy

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Emergency contraceptive pill use among women in Denmark, Norway and Sweden: Population-based survey

    Research output: Contribution to journalJournal articleResearchpeer-review

  1. Ovarian and Breast Cancer Risks Associated With Pathogenic Variants in RAD51C and RAD51D

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Gynaecological cancer leads to long-term sick leave and permanently reduced working ability years after diagnosis

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Prevalence, incidence, and natural history of HPV infection in adult women ages 24 to 45 participating in a vaccine trial

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Prevalence of human papillomavirus in oral epithelial dysplasia: Systematic review and meta-analysis

    Research output: Contribution to journalReviewResearchpeer-review

  5. Emergency contraceptive pill use among women in Denmark, Norway and Sweden: Population-based survey

    Research output: Contribution to journalJournal articleResearchpeer-review

  • Bo T Hansen
  • Susanne K Kjaer
  • Lisen Arnheim-Dahlström
  • Kai-Li Liaw
  • Kirsten E Juul
  • Louise T Thomsen
  • Kirsten Frederiksen
  • K Miriam Elfström
  • Christian Munk
  • Mari Nygård
View graph of relations

INTRODUCTION: Sexual behavior at the population level impacts on public health. Recent representative sexual behavior data are lacking.

MATERIAL AND METHODS: Cross-sectional surveys in 2005 and 2012 on women age 18-45 years randomly selected from the general population in Denmark (n = 40 804), Norway (n = 30 331) and Sweden (n = 32 114).

RESULTS: Median (interquartile range) age at first intercourse was 16 (15-18) years in Denmark, 17 (16-18) years in Norway, and 17 (15-18) years in Sweden. Women in the most recent birth cohort had sexual debut at the lowest age, and were most likely to have sexual debut before the legal age of consent. Proportions with debut age ≤14 years among women born 1989-1994 vs 1971-1976, odds ratio (95% confidence interval) were: 18.4% vs 10.9%, 1.95 (1.74-2.18) in Denmark, 12.9% vs 6.3%, 2.38 (2.01-2.82) in Norway, 17.8% vs 11.4%, 1.75 (1.55-1.98) in Sweden. Median (interquartile range) number of lifetime sexual partners was 6 (3-10) in Denmark, 5 (2-10) in Norway, and 6 (3-11) in Sweden. The proportion of women reporting >10 sexual partners was also highest in the most recent survey. The percentage with odds ratio (95% confidence interval) in 2012 vs 2005 surveys were: 24.9% vs 22.8%, 1.13 (1.07-1.18) for Denmark; 23.8% vs 19.8%, 1.27 (1.19-1.34) for Norway; and 28.3% vs 23.8%, 1.31 (1.24-1.38) for Sweden. Similarly, the proportion of women reporting ever having had a sexually transmitted infection among women age <30 years were: 29.4% vs 26.4%, 1.21 (1.13-1.31) in Denmark, 28.9% vs 25.0%, 1.20 (1.10-1.31) in Norway, and 29.4% vs 22.2%, 1.45 (1.33-1.58) in Sweden.

CONCLUSIONS: Scandinavian women reported lower age at first intercourse in younger birth cohorts. Moreover, they reported more lifetime sexual partners and a higher prevalence of ever having a sexually transmitted infection in 2012 than in 2005. Our findings may inform the interpretation of trends in outcomes associated with sexual health, and public health policies.

Original languageEnglish
JournalActa Obstetricia et Gynecologica Scandinavica
Volume99
Issue number2
Pages (from-to)175-185
Number of pages11
ISSN0001-6349
DOIs
Publication statusPublished - Feb 2020

    Research areas

  • first intercourse, lifetime sexual partners, sexual behavior, sexual debut, sexual health, sexually transmitted infection

ID: 58437668