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Genital warts in men: a large population-based cross-sectional survey of Danish men
  1. Christian Munk1,
  2. Ann Nielsen1,
  3. Kai-Li Liaw2,
  4. Susanne Krüger Kjaer1,3
  1. 1Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
  2. 2Merck Research Laboratories, Merck & Co., Inc., Upper Gwynedd, Pennsylvania, USA
  3. 3Department of Obstetrics and Gynecology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
  1. Correspondence to Professor Susanne Krüger Kjaer, Department of Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Strandboulevarden 49, Copenhagen Ø DK-2100, Denmark; susanne{at}


Objectives To estimate the occurrence of and risk factors associated with genital warts in Danish men

Methods We conducted a cross-sectional, questionnaire-based study among almost 23 000 men aged 18–45 years, randomly sampled from the general population of Denmark. Data was collected on self-reported clinically diagnosed genital warts, and various lifestyle habits.

Results Ever having had clinically diagnosed genital warts was reported by 7.9% of the men. The median age at first occurrence was 22 years. Genital warts within the previous 12 months were reported by 0.92% of the men, with a peak of 1.83% among men aged 21–24 years. The likelihood of reporting genital warts was strongly correlated with the lifetime number of sex partners (OR 8.0; 95% CI 6.0 to 10.8 for ≥15 partners vs 1–2 partners). Other factors associated with an increased risk for genital warts included ever having smoked and having had other sexually transmitted infections.

Conclusions Almost 8% of Danish men aged 18–45 years reported having had a diagnosis of genital warts. The results provide baseline information for developing and monitoring prevention strategies against genital warts, such as vaccination against human papillomavirus types 6 and 11.

  • Genital Warts
  • HPV
  • Epidemiology (Clinical)

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