We examined the sexual behavior, sexual identities, and HIV risk factors of a community sample of Latino men to inform efforts to reduce Latinos' HIV risk. In 2005 and 2006, 680 Latino men in San Diego County, California, in randomly selected, targeted community venues, completed an anonymous, self-administered survey. Most (92.3%) respondents self-identified as heterosexual, with 2.2%, 4.9%, and 0.6% self-identifying as bisexual, gay, or other orientation, respectively. Overall, 4.8% of heterosexually identified men had a lifetime history of anal intercourse with other men. Compared with behaviorally heterosexual men, heterosexually identified men who had sex with both men and women were more likely to have had a sexually transmitted infection, to have unprotected sexual intercourse with female partners, and to report having sex while under the influence of alcohol or other drugs. Bisexually identified men who had sex with men and women did not differ from behaviorally heterosexual men in these risk factors. Latino men who have a heterosexual identity and bisexual practices are at greater risk of HIV infection, and efforts to reduce HIV risk among Latinos should target this group.
Copyright American Public Health Association Jan 2009[Headnote] Objectives. We examined the sexual behavior, sexual identities, and HIV risk factors of a community sample of Latino men to inform efforts to reduce Latinos' HIV risk. Methods. In 2005 and 2006, 680 Latino men in San Diego County, California, in randomly selected, targeted community venues, completed an anonymous, self-administered survey. Results. Most (92.3%) respondents self-identified as heterosexual, with 2.2%, 4.9%, and 0.6% self-identifying as bisexual, gay, or other orientation, respectively. Overall, 4.8% of heterosexually identified men had a lifetime history of anal intercourse with other men. Compared with behaviorally heterosexual men, heterosexually identified men who had sex with both men and women were more likely to have had a sexually transmitted infection, to have unprotected sexual intercourse with female partners, and to report having sex while under the influence of alcohol or other drugs. Bisexually identified men who had sex with men and women did not differ from behaviorally heterosexual men in these risk factors. Conclusions. Latino men who have a heterosexual identity and bisexual practices are at greater risk of HIV infection, and efforts to reduce HIV risk among Latinos should target this group. (Am J Public Health. 2009;99:125-132. doi:10.2105/AJPH.2007.129809)
Latinos and sexual minorities are disproportionately affected by HIV/AIDS. Latinos represented 14% of the US population in 2005,1 but they accounted for18%ofHIV/AIDS cases diagnosed in 2006.2 Although an estimated6%to9%of the US population has a lifetime history of homosexual sex,3,4 menwho have sexwithmen accounted for 49% of all HIV/AIDS cases diagnosed in the United States in 2006.2 Sexual risk for HIV varies considerably by sexual orientation, with gay-identified and bisexually identified men generally at greater risk.5,6 However, a person's selfidentified sexual orientation frequently does not correspond to his or her sexual behavior.7-9
Within Latino culture, it is possible for a man to have sex with men while maintaining a heterosexual identity and protecting his sense of masculinity.10-13 For Latino men, sexual identity appears to be contingent upon certain behavioral and contextual factors, such as whether they have female sexual partners, are primarily attracted to women, adopt an insertive role in sexual practices, have sex with effeminate men, or have sex with men when under the influence of alcohol or drugs. Homophobia, social stigma attached to same-sex practices, and sexual conservatism are commonly found throughout Latino culture andmay inhibit Latino men who have sex withmen fromself-identifying as gay or bisexual.9,10,14-16 Research suggests that Latino men are more likely than are White men to engage in bisexual behavior (i.e., to have sex with both men and women)8,17,18 but are less likely than are White men to disclose a nonheterosexual orientation.16,19,20
Among men, bisexual behavior appears to be more prevalent than bisexual identity. Although approximately1%to 2% of the US male population identifies as bisexual,3,4 rates of male bisexual behavior in national samples have ranged from 1% to 5%.4,21,22 However, these estimates are questionable because of differences in sampling methods and varying definitions of bisexuality.23 Recent research conducted in the United States suggests that men who have sex with men and women (MSMW) are at greater risk of HIV infection than men who have sex with men (MSM) exclusively and men who have sex with women (MSW) exclusively.24-26 By contrast, investigators in Mexico have found that MSMW who self-identify as bisexual practice less risky sexual behaviors with their male partners than do exclusively gay men.6
It has been difficult to quantify the population of heterosexually identified Latino MSMWbecause of the secretive nature of their sexual practices. In a homophobic cultural context, the fear of social rejection encourages people to hide their same-sex sexual behavior and lead a double life.10Astudy involving a large population ofHIVpositive MSM found that 15% of the Latino sample identified as heterosexual had a history of same-sex intercourse,27 whereas a survey of 455 men recruited from gay-oriented publications and venues in 12 US cities found that17% (n=26) of Hispanic respondents (as per terminology used in the original survey) reported being "on the down low".9 Although these results may not generalize to community-based US samples of Latino men, they suggest that a substantial proportion of heterosexually identified Latino men have a history of sex with men. Similarly, a household probability survey in Mexico City found that 73% of men with a lifetime history of bisexual practices identified as heterosexual, as did 29%of those with a lifetime history of having sex only with men.6
Men's nondisclosure of sexual practices with men has implications for the health of their female sexual partners.8,17 In the United States in 2006, Latinas accounted for 23.7% of HIV infections among Hispanics; of these, an estimated 51.7% were infected through heterosexual contact.2 Although most cases of heterosexual transmission to Latinas are related to sex with injection drug users,28 women who have unprotected sex with heterosexually identified MSMWare also at risk and are likely a subset of this population.
Although there is some evidence of greater HIV risk among MSMW than among MSM or MSW,24-26 previous research has not examined the roles that both sexual behavior and sexual identity play in HIV risk among Latino men in particular. Sexual identitymay influenceHIV risk among Latino MSMW because a man who identifies as heterosexual may perceive that he is at lower risk of sexually transmitted infections (STIs) than are gay or bisexual men and may thus take fewer measures to protect himself or his partner. MSMW who identify as heterosexual may also be more likely to resort to substance use to reduce sexual inhibition, thus increasing the likelihood that they will engage in unsafe sex.29
Our goal was to learn more about the sexual practices of Latino men and to better understand the interactions among sexual behaviors and sexual identities in this population so as to inform efforts to reduce HIV risk among Latinos. Using survey data, we examined the sexual behavior of a community sample of Latino men; determined the proportions of MSM, MSW, and MSMW among them; elicited any discrepancies between their sexual behavior and their sexual identity; and searched for differences in HIV risk by sexual orientation.
METHODS
Design and Procedures
We used baseline data collected as part of a larger study that evaluated a social marketing campaign to reduce HIV risk among heterosexually identified Latino MSMW in northern San Diego County, California. From December 2005 through April 2006, a cross-sectional community-based survey was conducted with Latino men recruited from 12 local venues. Using formative research, venues were selected to represent both high-risk and low-risk locations, with risk level determined by the extent to which sexual risk practices were likely to occur at or in proximity to the venue. Twelve sites covering the geographic region of northern San Diego County were identified, including 7 low-risk venues (i.e., a workplace, a migrant camp, a labor pickup site, 2 shopping centers, a center for the teaching of English as a second language, and a men's shelter) and 5 high-risk venues (i.e., an adult bookstore and 4 bars or clubs).
Sampling shifts at each venue were selected based on days and times when sampling venues were operating (e.g., bars and clubs were only open in the evening) and when access to Latino men could be ensured (e.g., men congregated at labor pickup sites only in the morning). During every sampling period, random selection procedures were used to screen and recruit eligible participants. Eligibility included self-reported Latino ethnicity, being 18 years or older, and being alone or in the company of other men. Venue-specific recruitment goals were established based on the results of previous enumeration activities, to ensure that the number of completed surveys for each venue was proportional to the size of the target population visiting each site. The survey design included 3 sampling periods (December 2005, February 2006, and April 2006) and was based on the aims of the larger intervention study for which these data served as baseline. The response rate across all venues was 63% (70% for low-risk venues and 53% for high-risk venues).
Measures
Participants completed a self-administered intercept survey on a handheld computer using Questionnaire Development Software's HAPI data-collection module (NOVA Research Company, Bethesda, MD). The survey was anonymous and was available in either Spanish or English. Survey topics included demographic information; lifetime history of HIV and STI testing; lifetime and recent (previous 60 days) sexual behavior with both female and male partners, including vaginal intercourse, insertive anal intercourse, and receptive anal intercourse; and recent (previous 60 days) substance use.
Statistical Analysis
We defined sexual orientation according to 2 dimensions: gender of lifetime sexual partners and self-identified sexual orientation. We defined men as behaviorally heterosexual if they self-identified as heterosexual and reported no history of sexual activity with men (heterosexually identified MSW). We defined men as gay if they self-identified as gay or homosexual (gay-identified MSM). We defined men as bisexual if they self-identified as bisexual (bisexually identified MSMW). We defined men as heterosexually identified MSMW if they identified as heterosexual but had a history of having sex with men. All other men were classified as having an orientation of "other."
Descriptive statistics and frequencies were computed for demographics, sexual behavior, substance use, and HIV and STI testing history. Bivariate (likelihood ratio) analyses explored differences in sexual behavior, substance use, and HIV and STI testing history by sexual orientation. Logistic regression models were estimated with each of the HIV risk variables as dependent variables, with sexual orientation as the main predictor variable, and with age, marital status, education, acculturation, and survey venue as covariates. Because of the small sample size and heterogeneity of the "other" sexual orientation category, this subgroup was included in descriptive analyses for the whole sample but was excluded from subsequent bivariate and multivariate analyses comparing HIV risk among sexual orientation categories. All analyses were computed using SPSS version 14.0 (SPSS Inc, Chicago, IL).
RESULTS
Sample Characteristics
A total of 781 Latino men completed the survey. After excluding repeat survey participants, we included 680 participants (mean age=28.4 years; SD=9.1; range=18-65 years) in descriptive analyses. More than half (53%) were single or never married. Only 21.8% had completed a high school education or higher. The vast majority (92%) were born in Mexico, with an additional 5% born in the United States and 3% in another country. Among foreignborn participants (n=647), more than two thirds had been in the United States for 5 or fewer years , with 30% reporting US residency of less than1year. The percentage in our sample who reported being of Mexican origin matched US Census data for San Diego County, as did the percentage of foreign-born respondents who reported Mexico as their place of birth.30,31 Almost all respondents were primarily employed in 1 of 4 occupations: agriculture (29%), manufacturing (21%), service industry (24%), and construction (20%).
The majority (92.3%) of participants selfidentified as heterosexual, with 2.2%, 4.9%, and 0.6% self-identifying as bisexual, gay, or other orientation, respectively. However, a smaller percentage (86.2%) reported a lifetime history of sexual practices with female partners exclusively. About 6% of men reported having a history of having sex with both men and women, 5.4% reported a history of sex with men only, and 2.4% reported no previous sexual practices with males or females. In all, 4.8% of heterosexually identified men had a lifetime history of anal intercourse with other men. According to our criteria, 87.6% of respondents were classified as heterosexually identified MSW; 4.4% as heterosexually identified MSMW; 2.4% as bisexually identified MSMW; and 4.7% as gay-identified MSM. The following percentages of respondents were recruited from high-risk recruitment venues: 46% of heterosexually identified MSW, 66.7% of heterosexually identified MSMW, 71.9% of gay-identified MSM, and 75% of bisexually identified MSMW.
Sexual Risk Practices
Most (56.5%) of the total sample of men reported sex with a female partner during the previous 60 days; of these, 58.2% reported not using a condom during 1 or more of these encounters, with percentages ranging from 25% among bisexually identified MSMW to 77.5% among heterosexually identified MSMW (Table 1). A minority of respondents (6.8%) reported engaging in anal intercourse with a male partner during the previous 60 days, with 57.8% of these reporting 1 or more unprotected encounters. The percentage of insertive anal intercourse equaled that of receptive anal intercourse (3.97%). By sexual orientation, percentages of insertive anal intercourse during the previous 60 days ranged from 31.2% among gay-identified MSM and bisexually identified MSMW to 36.7% among heterosexually identified MSMW. Percentages of receptive anal intercourse during the previous 60 days ranged from 10% among heterosexually identified MSMW to 50% among gayidentified MSM (P=.002). A majority (53.8%) of those who had insertive anal intercourse did so without using a condom, as did almost half (48.1%) of those who had receptive anal intercourse (Table 1).
Out of 30 heterosexually identified MSMW, 40% (n=12) were estimated to have engaged in sex with both female and male partners during the previous 60 days. Among this subset, 91.7% (n=11) reported engaging in unprotected sex with both female and male partners. By contrast, 25% of 16 bisexually identified MSMW (n=4) reported sexual intercourse with both men and women during the previous 60 days; among them, only 1 reported unprotected sex with both genders.
After adjusting for covariates, we found that heterosexually identified MSMW were 3.5 times more likely than were heterosexually identified MSW to report not using a condom with a female partner during the previous 60 days (95% confidence interval [CI]=1.15, 10.81; Table 2). Given the small size of the subsamples that reported recent anal intercourse with male partners, we performed no multivariate tests for significant differences in unprotected insertive and receptive anal intercourse with males by sexual orientation.
Other HIV-Risk-Related Practices
Condom carrying and risk perception. Overall, 23.1% of participants were carrying condoms at the time of the survey, with percentages ranging from 21% among heterosexually identified MSMW to 53.1% among gay-identified MSM (Table 3). With regard to perceived risk for HIV infection, 26.9% of participants considered themselves at medium or high risk, with percentages of risk perception being lowest among heterosexually identified MSW (23.4%) and highest among bisexually identified MSMW (68.8%; P<.001).
After adjusting for covariates, we observed significant differences in the distribution of condom carrying and risk perception. Gayidentified MSM were 3.3 times more likely than were heterosexually identified MSW to report current condom carrying (95% CI=1.5, 7.2; Table 4). Gay-identified MSM were 4.8 times more likely than were heterosexually identified MSW to perceive themselves as being at risk of HIV infection (95% CI=2.2, 10.4), and bisexually identified MSMW were 7.4 times more likely than were heterosexually identified MSW to perceive themselves as being at risk of HIV infection (95% CI=2.5, 22.1). A trend was observed suggesting that heterosexually identified MSMW were more likely to perceive themselves as being at risk of HIV infection than were heterosexually identified MSW; however, this result did not reach statistical significance (P =.07). No significant differences were found between heterosexually identified MSMW and heterosexually identified MSW for condom carrying.
Substance use. Almost one quarter of participants (23.4%) reported having sex while under the influence of alcohol during the previous 60 days, with percentages varying from18.8% among bisexually identified MSMW to 50% among heterosexually identified MSMW. In addition, 11.5% reported using illegal drugs, 6.1% reported having sex under the influence of illegal drugs, and 14.9% reported injection of a substance (e.g., medication, vitamins, illegal drugs). Heterosexually identified MSMWtended to report the highest percentages of illegal drug use (43.3%), drug use during sex (30%), and substance injection (26.7%). Bivariate statistical tests indicated significant differences in alcohol use before or during sex (P=.004), illegal drug use (P<.001), and drug use during sex (P<.001), by sexual orientation (Table 3).
After adjusting for covariates, we found that heterosexually identified MSMW were 3.3 times more likely to report sex under the influence of alcohol (95% CI=1.5, 7.1), 6 times more likely to report illegal drug use (95% CI=2.7, 13.5), and 6.2 times more likely to report sex under the influence of illicit drugs (95% CI=2.4, 16.1) than were heterosexually identified MSW (Table 4). Bisexually identified MSMW were also significantly more likely than were heterosexually identified MSW to report use of illegal substances (odds ratio [OR]=3.8; 95% CI=1.2, 11.8). Sexual orientation was not predictive of substance injection.
HIV and STI testing. Only 38.2% of the sample reported having been tested for HIV. Of these, 3.5% (n=9) reported that they were HIV positive. Among those who were HIV negative or whose HIV status was unknown, 46.5% did not know where they could get tested, and 43.4% had no intention of being tested in the next 6 months. Only 23% of men reported having been tested for STIs. Of these, 11% reported having had an STI in their lifetime (Table 3). Results from multivariate analysis indicated that, compared with heterosexually identified MSW, heterosexually identified MSMW and gay-identified MSM were significantly more likely to have been tested for HIV (heterosexually identified MSMW: OR=4.5; 95% CI=2.0, 10.2; gay-identified MSM: OR=11.3; 95% CI=3.8, 33.6). Gay-identified MSM were more likely than were heterosexually identifiedMSWto intend to be tested in the next 6 months (OR=2.7; 95% CI=1.2, 6.4). Heterosexually identified MSMW (OR=4.1; 95% CI=1.9, 9.0), bisexually identified MSMW (OR=3.1; 95% CI=1.1, 8.8), and gay-identified MSM (OR=3.7; 95% CI=1.7, 8.1) were more likely than were heterosexually identified MSW to have been tested for other STIs (Table 4). Heterosexually identified MSMW were more than 4.3 times more likely than were heterosexually identified MSW to report having had a STI (OR=4.3; 95% CI: 1.8, 9.9).
DISCUSSION
The estimate of behavioral bisexuality found among the present sample of Latino men (6%) was slightly larger than those previously reported in Mexico6 (2.1% for lifetime bisexual practices) and national US samples (1%-4.9% for various time frames).4,21,22 This may reflect our definition of behavioral bisexuality, which was based on lifetime sexual practices instead of recent sexual practices, and the fact that some of our venues had a significant proportion of gay-identified patrons. It may also be indicative of the higher rates of behavioral bisexuality among men of color reported in previous research. 8,9,17,18,26,29 However, we obtained a smaller percentage of heterosexually identified MSMW in our sample than those obtained in previous studies that included Latinos in the United States.8,9 This difference could be explained by an underreporting of sexual practices, particularly those that are stigmatized; a lack of measures on oral sex in our study; sampling biases in our study and in previous research; or the paucity of research that has simultaneously examined sexual identity and sexual behaviors with both women and men. Regardless, these results indicate that a significant proportion of heterosexually identified Latino men in our sample have engaged in sexual intercourse with men.
HIV testing rates for our sample (38.2%) were lower than those estimated for Latino males in the United States (45%)32 and may be explained by the fact that most of the respondents in our sample were foreign born or recent immigrants. However, our HIV and STI testing rates were higher than were those estimated for migrants returning to Mexico from the United States (HIV testing: 22%-29%; STI testing: 10%-13%).33 A surprisingly high proportion of men reported being HIV positive; in the context of limited HIV testing, this finding may actually reflect underestimated rates of infection. However, these data must be interpreted cautiously, because the inclusion of high-risk venues may have caused us to find higher HIV rates than would be seen in the general population and because our data on HIV status are based solely on self-reports. Still, these findings call attention to the need to promote HIV and STI testing for low-acculturated Latinos.
Compared to heterosexually identified MSW, heterosexually identified MSMW were more likely to report a history of STIs and recent unprotected sexual intercourse with a female partner. Moreover, half of heterosexually identified MSMW reported recent anal intercourse with a male partner; among them, 3 out of 4 reported inconsistent condom use during same-sex encounters. These findings add to previous research on behavioral bisexuality24-26,34 and have significant implications for the health of our respondents' sexual partners. Previous studies have suggested that risky bisexual behavior among men may serve as a bridge for HIV transmission from high-prevalence groups to the general population. 6,25,35 Research suggests that a relatively small proportion of HIV infections in the United States are attributable to bisexual behavior.35 However, these estimates rely on openly reported bisexual behavior. Because of stigma associated with homosexual practices,19,36 many behaviorally bisexual men may underreport or deny same-sex practices. Underreporting of same-sex practices among heterosexually identified MSMW may lead to an underestimation of the contribution that this transmission avenue makes to the HIV epidemic in the United States.
Heterosexually identified MSMW were also more likely to report recent drug use and sexual intercourse while under the influence of alcohol or other drugs. This finding is consistent with previous research suggesting that substance use is frequently a contextual factor in same-sex intercourse among heterosexually identified MSMW14,16,37 and may contribute to increased risk for HIV infection among these men and their sexual partners.37 With less than 50% of men in our sample reporting using a condom during every recent sexual encounter, additional efforts clearly must be taken to encourage heterosexually identified MSMW to consistently use condoms with both male and female partners.
Despite their same-sex sexual practices and substance-influenced encounters, heterosexually identified MSMW did not perceive their risk for HIV to differ significantly from that of heterosexually identified MSW. A considerable proportion of heterosexually identified MSMW in our sample (27%; data not shown) only adopted an insertive role in anal intercourse with men, reducing to some extent their risk of acquiring HIV. However, HIV and STI prevention interventions clearly should be targeted toward this population, including efforts to raise risk awareness.
Implications
These findings have important implications for future HIV prevention research and practice. First, more research is warranted to elucidate the relative contributions of male sexual identity and bisexual behavior to the increasing proportion of Latinas among new HIV cases. Previous studies have suggested that Latino MSM and MSMW are more likely to maintain a heterosexual identity than are Whites.16,19 However, more comparative studies are needed because little research has been conducted with White men on this issue. Additional research is also required to identify factors associated with the adoption of a heterosexual identity among MSMW. Because the only thing that differentiates bisexually identified MSMW from heterosexually identified MSMW is sexual identity, a comparison between these 2 groups would be particularly interesting.
Second, these findings underscore the need for HIV prevention efforts targeting heterosexually identified Latino MSMW and their male and female sexual partners, such as efforts to reduce social stigma attached to same-sex intercourse and campaigns to raise HIV awareness regardless of sexual identity. Other interventions may include (but are not limited to) those promoting routine HIV and STI screening as a standard part of well-adult care38 and those attempting to normalize condom use regardless of sexual identity or the gender of one's sexual partners. Programs need to be consistent with and respectful of these men's sexual identities; they also must reduce the stigma associated with HIV testing and condom use, which are often perceived among Latinos as practices associated with homosexuality and signs of distrust or infidelity within relationships.39,40 Finally, interventions targeting Latinas as the sexual partners of MSMW are needed, especially in light of recent findings that sex within marriage may be the single greatest risk for HIV among Mexican women.34,41These interventions should be gender sensitive, taking into account potential constraints upon women's abilities to respond to their partners' risk, and routine opt-out HIV testing should be promoted.38
Our findings offer additional evidence that both behavior and identity are important dimensions of sexual orientation that need to be contemplated when assessing HIV risk and evaluating prevention interventions. Our results point to the need for future research that will help investigators develop a better understanding of how heterosexual identity might increase HIV risk among behaviorally bisexual Latino men. There is also a need for research examining whether the differences among various sexual orientation groups observed here extend to Latino men in general or to other racial/ethnic male populations. Research on these topics should be carefully framed to avoid adding stigma and generating sensationalist discourses regarding heterosexually identified MSMW of color, or the so-called "down low" phenomenon.
Limitations
Our sampling procedures were part of a larger intervention study and included targeted sampling at venues in which heterosexually identified MSMW were likely to be found. Thus, the results may not reflect the risk dynamics of Latinos outside northern San Diego County and may be limited to the population of Latino men who frequent these types of venues. In addition, the inclusion of lifetime versus recent sexual practices in our definition of behavioral bisexuality may have overestimated the proportion of behaviorally bisexual men among our sample. Estimates of bisexuality have been found to vary substantially depending on the time frame of sexual behavior selected.6 Our use of lifetime sexual practices may have captured early same-sex experiences (e.g., single-incident youthful experimentation or instances of childhood sexual abuse) that are not indicative of recent sexual practices. The use of alternate time frames to differentiate past sexual experimentation from current behavioral practices should be explored, and clear distinction should be made between consensual sexual experiences versus those that were forced or coerced. Future research should also examine the number of male partners and sexual encounters, because these factors would affect the probability of viral exposure and thus the risk for HIV infection.
More than 90% of our sample was born in Mexico, limiting our ability to generalize these results to other foreign-born Latino men. Future research should include larger subsamples of Latino males from countries other than Mexico to allow analysis of possible differences by country of origin. Because of survey space and time limitations, we were also unable to directly assess contextual and sociodemographic factors that might be associated with sexual risk, such as housing type and urban versus rural place of residence. Future research should include measures of these factors and assess the extent to which they may confound the observed association between sexual identity and HIV risk.
Participants in our survey were only asked about anal intercourse with other men, because these present the highest risk for HIV infection or transmission. However, oral sex with male partners may be a more common sexual practice for behaviorally defined bisexual Latino men.6 Although oral sex may represent a low-risk behavior from an HIV-transmission perspective, if the experience is perceived favorably, it may serve as a gateway to riskier same-sex practices. Oral sex also has significant implications for STI transmission. Future research should therefore estimate the prevalence of oral sex with male partners among heterosexually identified MSMW and explore the relationship of these practices to subsequent sexual risk behavior.
Finally, because of the small number of men reporting recent anal intercourse with another man, we were unable to explore the relationship between sexual identity and condom use with male partners. Because unprotected anal intercourse represents the greatest risk for HIV and STI transmission between male partners, further research is needed to examine the extent to which heterosexually identified MSMWmay differ from men of other sexual orientations in their same-sex sexual practices.
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| [Author Affiliation] |
| Jennifer A. Zellner, PhD, Ana P. Martínez-Donate, PhD, Fernando Sañudo, MPH, Araceli Fernández-Cerdeño, MA, Carol L. Sipan, MPH, RN, Melbourne F. Hovell, PhD, MPH, and Héctor Carrillo, DrPH |
| About the Authors |
| At the time of the study, Jennifer A. Zellner, Ana P. Martínez-Donate, Araceli Fernández-Cerdeño, Carol L. Sipan, and Melbourne F. Hovell were with the Center of Behavioral Epidemiology and Community Health, Graduate School of Public Health, San Diego State University, San Diego, CA. Ana P. Martínez-Donate was also with the Department of Population Health Sciences, University of Wisconsin, Madison. Fernando Sañudo was with Vista Community Clinic, Vista, CA. Héctor Carrillo was with the Department of Human Sexuality Studies, San Francisco State University, San Francisco, CA. |
| Requests for reprints should be sent to Ana P. Martínez-Donate, Department of Population Health Sciences, University of Wisconsin-Madison, 610 Walnut St, WARF 605, Madison, WI 53726-2397 (e-mail: martinezdona@ wisc.edu). |
| This article was accepted May 6, 2008. |
| Contributors |
| J. A. Zellner supervised the study, assisted with analyses, and led the writing of the article. A. P. Martínez-Donate originated and directed the study, performed the data analyses, and contributed substantially to the writing of the article. F. Sañudo was the co-principal investigator of the study. A. Fernández-Cerdeño, C. L. Sipan, M. F. Hovell, and H. Carrillo assisted with the design and implementation of the study. All authors helped interpret findings and reviewed drafts of the article. |
| Acknowledgments |
| This research was supported by the California HIV/AIDS Research Program of the University of California, Office of the President (grants AL04-SDSUF-804 and AL04-VCC-805), and by intramural support from the Center of Behavioral Epidemiology and Community Health at San Diego State University. |
| Human Participant Protection |
| All study procedures were reviewed and approved by the San Diego State University institutional review board and by the social and behavioral sciences institutional review board at the University of Wisconsin-Madison. |
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