Try out PMC Labs and tell us what speed dating events Fontana tonight think. Learn More. This elevated risk persists free date Fargo ND age groups and reflects biological and behavioral factors, yet there have been few direct comparisons of sexual behavior patterns between these populations.
We compared sexual behavior patterns of MSM and male and female heterosexuals aged 18—39 using 4 population-based random digit dialing surveys. A — survey in 4 U. Sexual debut occurred earlier among MSM than heterosexuals. MSM reported longer cumulative lifetime periods of new partner acquisition than heterosexuals, and a more gradual decline in new partnership formation with age.
MSM reported more consistent condom use during anal sex than heterosexuals reported during vaginal sex. MSM have longer periods of partnership acquisition, a higher prevalence of partnership concurrency, and more age-disassortative mixing than heterosexuals.
In part, these differences reflect the fact that an individual MSM can engage in both insertive and receptive sexual roles i. Goodreau et al.
Furthermore, the transmission probability of HIV associated with anal sex is higher than that associated with vaginal sex 67. These factors alone would result in ificant disparities in Palm Bay FL free chat rooms rates between MSM and heterosexuals even if both populations had similar s of sex partners, frequency of sex, and condom use levels 8. However, the sexual behaviors of MSM and of male and female heterosexuals are substantially different in ways that are not explained by biology alone.
Prior research has found that MSM tend to have higher s of sex partners than heterosexuals 9but the dynamics of partnership formation 10concurrency 11and age mixing patterns 12 — 14 have not been extensively characterized.
In this paper we used population-based studies to compare the sexual behaviors of MSM and heterosexual single Atlanta Georgia girls looking for older men and women in the U. We used data from 4 random digit dialing RDD surveys Table 1. Present analysis restricted to those who reported exclusively heterosexual partnerships. For this analysis, we excluded SSS participants who had never had sex or reported partnerships that were not exclusively heterosexual.
Men who reported same-sex sexual behavior since age 14 were eligible. Oral informed consent was obtained from all participants. To increase comparability across all surveys, we restricted analyses to participants aged 18—39 years.
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This denominator was the sum of the of interviews, refusals, and an estimate of the of eligible individuals among those for whom eligibility could not be determined Although the exact wording of questions varied across surveys, most measures were similar. The Flirt Elko includes specific survey questions and more detailed descriptions of each measure. Among MSM only, we also compared age at sexual debut with a male partner and the age at anal sex debut.
The SSS and UMHS provided data on lifetime of partners, while all surveys included a question about of partners in the past year.
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Using these data, we calculated the proportion of participants who had formed any new partnership in the past year. Finally, we used the variable regarding of partners in the past year to indicate if an individual had engaged in any sex in the past year. Across all surveys, we assessed whether or not participants always used condoms with their most recent partner. This was based upon partner-specific questions about how often condoms were used, or by comparing the total of sex acts with the of protected sex acts.
Using available partnership Omaha NE date night and end dates month and yearwe determined the Detroit Michigan is dating of respondents who reported any overlapping partnerships in the past year.
We classified participants with no partners in the past year as having no partner concurrency. Using a question about how respondents met their most recent partner, we created three 26 : through formal social venues e. Paterson good will hunting online free compared each measure among heterosexual men and women and MSM using descriptive statistics. As appropriate, we used t-tests, chi-square hookup, or Wilcoxon rank-sum tests to assess for group differences, and linear and logistic regression to test for age trends.
Because we found no meaningful differences between the weighted and unweighted estimates in our analysis of UMHS data, we elected to apply a uniform analytic approach across datasets and all presented estimates are unweighted. Therefore, in the context Nelson these study des, p-values are best understood as a metric for comparing the strength of the observed associations within each study. The mean age Amarillo ladies for dating participants included in this analysis was similar across surveys, ranging from In all surveys, approximately three-quarters of participants were non-Hispanic white and two-thirds had obtained a 4-year college degree.
Among MSM, The mean age at date hookup Kalamazoo sexual Nelson was Heterosexual debut was older at Anal sex debut among MSM was several Amarillo 18 dating later than overall age of sexual debut, at The median lifetime of sex partners among those aged 18—24 was 4 in heterosexuals and 15 in UMHS MSM, and among persons age 35—39, was 10 and 67, respectively. The SEA did not ask about lifetime of partners. Across all age groups, MSM were more likely over 40s dating agency Bellevue heterosexuals to report having a new partner in the past year Figure 1a.
These proportions were lower among SEA MSM — due, in part, to the fact that only male anal sex partners were counted — with Among heterosexuals, the proportions were lower than in any of the MSM surveys, particularly among participants in their 30s. For example, For example, among participants aged 35—39, Only Consequently, MSM in each age group reported longer periods of new partner acquisition than heterosexuals, defined as the amount of time from sexual debut to the 50 dating Hawaii of the most recently hookup partnership.
Because the age-specific means for heterosexual men and women, and MSM in both surveys, were so similar within 1—3 yearswe combined the data for these respective groups.
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Among participants dating with Gainesville girl 35—39, MSM reported an average of At the same time, the proportion of individuals who reported no sexual hookup may be higher among Nelson MSM than among their heterosexual counterparts, though these findings were not consistent across surveys. This proportion was approximately four times higher than that observed among Seattle heterosexual men 4.
To accurately capture partnerships formed at a given age, we restricted these analyses to participants reporting a new partnership in the past year. Over one-half By contrast, only 7. No heterosexuals age 18—24 reported a recent partner with a year age difference, while A similar proportion reported this during receptive anal sex. By contrast, only As shown in Figure 2bthe prevalence of sex partner concurrency during the year was much lower among heterosexual men and women 9. Over three-quarters of heterosexual men MSM more often reported meeting partners through less formal social venues e.
Among women and UMHS MSM, the proportion who met their most recent partner through formal social venues was lower among older age groups Atlanta Georgia ochocinco dating younger age groups. We used data from several large population-based surveys to estimate the dynamics of sexual partnership formation, concurrency, and age mixing among MSM and heterosexuals.
MSM initiated sexual activity at slightly younger ages than heterosexuals, reported larger s of recent partners, continued to form new partnerships later into adulthood, and displayed more age-disassortative mixing and sex partner concurrency.
Dawsons Asheville online free, compared with heterosexuals, MSM used condoms more frequently and a larger proportion of MSM may become sexually abstinent in their 30s. Our findings are most notable for demonstrating how partnership formation patterns differed between MSM and heterosexuals from time of sexual debut through their 30s.
By contrast, a much higher proportion of MSM continued to form new partnerships well into their 30s. Our study suggests that the average period of new partnership acquisition among MSM is at least twice as long as among heterosexuals. Indeed, mathematical models estimated that the mean age of HIV acquisition among Australian MSM is in the mids 27and researchers in the UK found that HIV incidence was highest among MSM in this age group Nelsonan age when most heterosexuals are no longer forming new partnerships.
The epidemiologic implications of sustained new partnership formation among MSM are likely magnified by the relatively high frequencies of Chula Vista CA free chat lines age mixing observed among MSM compared to heterosexuals. Mathematical models suggest that sex partner concurrency amplifies the spread of HIV through sexual networks We found that the prevalence of concurrent partnerships in the past year was several-fold higher among MSM than heterosexuals, and that, unlike among heterosexuals, the prevalence of concurrency did not decline with age.
Data hookup other population-based studies have consistently found a higher prevalence of concurrency among heterosexual men than among women 31 — We also observed some gender asymmetry in the prevalence of concurrency among heterosexuals - slightly higher rates of concurrency Texas girls free chat heterosexual men than women - which le to small fragmented components e.
MSM overall reported both higher s of partners and more concurrency than heterosexuals. In a descriptive study like this it is not possible to tease apart the relative impact of these two factors.
Both likely contribute to greater transmission. But it cute dates in Savannah also possible that concurrency produces a qualitative difference in transmission dynamics even in this context — creating more robust connectivity in the network, compounded by the window of high infectivity during acute infection.
This qualitative effect has been shown in two recent modeling studies of heterosexual spread of HIV in Zimbabwe 3536and a similar modeling study would be needed here to identify the independent and t impacts sugar mama dating Frederick MD concurrency and rapid partner acquisition.
This study had several limitations. First, we used three different surveys which limited the comparability of measures between groups. To our knowledge, however, no single survey includes large s of MSM and heterosexuals from rigorously sampled representative populations as well as the parameters we sought to study.
The UMHS, on the other hand, was conducted in —98, which was 5—10 years earlier than the Seattle surveys.
For example, although there were drastic changes in internet use between the mids and mids, the proportion of MSM who met their partners through less formal social venues in general did not change. Although not presented here, there were very few differences in behavior patterns between the UMHS cities suggesting that sexual behavior patterns among urban MSM were relatively similar. A second limitation is that the low survey response rates may have affected the representativeness of our findings sex dating and relationships Santa Rosa CA there were differential participation rates associated with sexual behavior.