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Table 1 Distribution of sexual habits in the study population according to age at enrolment into the study

From: Sexual risk taking behaviour: prevalence and associated factors. A population-based study of 22 000 Danish men

  Age at entry in the study (years)
Sexual habits Total 18-20
(n = 1,958)
21-25
(n = 2,867)
26-30
(n = 3,469)
31-35
(n = 4,430)
36-40
(n = 4,905)
41-45
(n = 4,781)
  N % % (95% CI) % (95% CI) % (95% CI) % (95% CI) % (95% CI) % (95% CI)
Total 22,410 100 8.7 (8.4-9.1) 12.8 (12.4-13.3) 15.5 (15.0-16.0) 19.8 (19.3-20.3) 21.9 (21.4-22.4) 21.3 (20.8-21.9)
No sexual intercourse with a female partner 916 4.1 15.6 (14.0-17.3) 7.6 (6.7-8.7) 3.5 (2.9-4.1) 2.4 (1.9-2.8) 1.9 (1.6-2.3) 1.6 (1.2-1.9)
Lifetime number of female sexual partners               
   1 2,000 8.9 14.8 (13.3-16.5) 10.3 (9.2-11.5) 8.3 (7.4-9.3) 8.5 (7.7-9.4) 7.7 (7.0-8.5) 7.7 (7.0-8.5)
   2-4 4,670 20.8 32.6 (30.6-34.8) 24.3 (22.8-25.9) 21.8 (20.4-23.2) 18.0 (16.9-19.2) 18.9 (17.8-20.0) 17.9 (16.8-19.0)
   5-9 5,292 23.6 21.5 (19.7-23.4) 26.1 (24.5-27.7) 25.9 (24.4-27.4) 23.4 (22.1-24.6) 22.9 (21.7-24.1) 22.4 (21.2-23.6)
   ≥ 10 9,532 42.5 15.5 (13.9-17.2) 31.7 (30.0-33.4) 40.6 (39.0-42.2) 47.7 (46.3-49.2) 48.7 (47.3-50.1) 50.4 (49.0-51.9)
Number of new female sexual partners in the past 6 months               
   0-1 19,172 85.6 62.1 (59.9-64.3) 70.4 (68.7-72.1) 84.6 (83.4-85.8) 90.5 (89.6-91.4) 92.7 (92.0-93.5) 93.0 (92.2-93.7)
   ≥ 2 2,186 9.8 22.1 (20.2-23.9) 21.5 (19.9-23.0) 11.3 (10.3-12.4) 6.6 (5.9-7.4) 4.8 (4.2-5.4) 4.6 (4.0-5.2)
Sex with a commercial sex worker               
   Never 18,889 84.3 81.2 (79.4-82.9) 84.4 (83.1-85.8) 84.9 (83.7-86.1) 84.1 (83.0-85.2) 85.2 (84.2-86.2) 84.3 (83.2-85.3)
   Ever 2,524 11.3 3.2 (2.5-4.1) 7.4 (6.5-8.5) 11.1 (10.1-12.2) 13.3 (12.3-14.4) 12.4 (11.5-13.4) 13.9 (12.9-14.9)
  1. Because of missing values, the numbers might not add up to the total