Abilities of this preliminary analysis showed that while the survey year had a highly significant effect (p _year Fig 1 ), and median age at first intercourse with a man was represented by age group ( Fig 2 ). Standard age-cohort representations on raw data were used for the number of male partners ( Fig 3 ) and sexual practices ( Fig 4 ).

Studies within the 1995–2011, respondents aged 18–59. Reading: Respondents aged twenty five–29 interviewed inside the 1995 got turned 18 for the 1986 normally along with an average age initially intercourse having a guy equivalent to 17.8. Outlines was removed only if the newest age bracket is constructed of at least 30 respondents.

Results

Studies within the 1991–2011, participants old 18–59. Reading: twenty two.5% of your own participants regarding 1996–1999 age group stated over ten men couples in the last 12 months whenever their indicate many years try 18.6 decades (i.e., after they was indeed surveyed into the 1997). Outlines is drawn only if the fresh generation features at least 31 respondents.

Studies during the 1985–2011, participants old 18–59. Reading: 61.5% of your participants on the 1996–1999 age bracket said repeated anal intercourse when its suggest old was 18.six decades (i.elizabeth., when they was basically surveyed into the 1997).Contours try drawn on condition that the latest age group features within minimum 31 participants.

In the end, a good multivariate logistic regression is conducted to examine items associated with the revealing more 10 couples in the last 1 year from the fresh new 1991 on 2011 studies. Years and you will age squared was basically included in the design to adjust for the quadratic aftereffect of years into the built adjustable. I made use of the Wald attempt to evaluate to possess affairs ranging from per of one’s confounding variables (questionnaire resource, self-discussed sexual positioning, measurements of town of residence and you may amount of knowledge) and you may ages (linear term) and generation.

Profiles away from MSM on the studies ( Dining table step 1 )

The mean age of the respondents varied between 31.2 and 35.8 years from one survey to another (p Fig 1 represents the age-adjusted percentages of respondents who reported that du kan kolla hГ¤r their first sexual intercourse was with a man, by generation. It shows that younger generations had their first intercourse with a man more frequently than the older ones did: 76.0% in the 1956–1959 generation, 75.6% in the 1980–1983 generation, and 83.7% in the 2008–2011 generation (p_complete = 0.0002).

Fig dos reveals average decades in the beginning sexual intercourse which have a beneficial guy based on year out-of 18 th birthday celebration. The latest average ages at this feel stayed steady at around 18, beginning with the new 1970 age bracket. Since explained a lot more than, more youthful respondents (aged 18–24) got a lower life expectancy average years in the beginning intercourse (as much as 17) because of contribution prejudice; immediately following modifications having decades, decades initially sex failed to disagree between your 1968–1971 generations and people who used all of them (p = 0.21).