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Luff A, Nguyen NC, Luong TN, Andridge R, Hayford S, Norris AH, Gallo MF. Validity of Partner Reports of Recent Condomless Sex. Sex Transm Dis 2024; 51:254-259. [PMID: 38301628 PMCID: PMC10978231 DOI: 10.1097/olq.0000000000001931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
BACKGROUND Prostate-specific antigen (PSA), a biomarker of vaginal semen exposure, is less susceptible to bias than self-reported condom use behaviors. We examined the agreement of self-reported recent condomless sex (RCS) within couples and how these reports related to PSA detection. METHODS We analyzed data from a study conducted in Vietnam, 2017 to 2020, of 500 different-sex couples using condoms and no other contraceptive method to prevent pregnancy for 6 months. We assessed enrollment and 6-month data from vaginal swabs and questionnaires from both partners. We calculated Prevalence-Adjusted Bias-Adjusted Kappa (PABAK) to evaluate agreement of men's and women's reports. Among couples with detected PSA, we assessed partner concordance of RCS reporting. RESULTS At enrollment (n = 499), 79.8% of couples reported no RCS, 16.4% reported RCS, and 3.8% had partner-discordant reports (PABAK, 0.93; 95% confidence interval, 0.91-0.97). At 6 months (n = 472), 91.7% reported no RCS, 5.7% reported RCS, and 2.5% had partner-discordant reports (PABAK, 0.98; 95% confidence interval, 0.96-1.0). Among couples with detected PSA at baseline (11%, n = 55), 36% reported no RCS, 55% reported RCS, and 6% had discordant reports; at 6 months (6.6%, n = 31), 58% reported no RCS, 35% reported RCS, and 3% had discordant reports. CONCLUSIONS We observed high agreement regarding condomless sex within couples in a population using condoms as contraception in Vietnam; however, a high proportion of couples with detected PSA had both partners reporting no RCS, indicating that concordant reporting of no RCS does not indicate lack of semen exposure.
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Affiliation(s)
- Amanda Luff
- Division of Epidemiology, College of Public Health, The Ohio State University, Columbus, Ohio
- Advocate Aurora Research Institute, Aurora Health Care, Advocate Health, Milwaukee, Wisconsin
| | - Nghia C Nguyen
- Department of Obstetrics and Gynecology, Vinmec International Hospital, Hanoi, Vietnam
| | - Truong N Luong
- Thanh Hoa Center for Disease Prevention and Control, Thanh Hoa, Vietnam
| | - Rebecca Andridge
- Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, Ohio
| | - Sarah Hayford
- Department of Sociology, The Ohio State University, Columbus, Ohio
| | - Alison H Norris
- Division of Epidemiology, College of Public Health, The Ohio State University, Columbus, Ohio
| | - Maria F Gallo
- Division of Epidemiology, College of Public Health, The Ohio State University, Columbus, Ohio
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Abstract
Supplemental Digital Content is Available in the Text. Little is known about risk compensation among female sex workers (FSW) on HIV pre-exposure prophylaxis (PrEP), and self-report of sexual behaviors is subject to bias.
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Woolf-King SE, Muyindike W, Hobbs MM, Kusasira A, Fatch R, Emenyonu N, Johnson MO, Hahn JA. Vaginal Prostate Specific Antigen (PSA) Is a Useful Biomarker of Semen Exposure Among HIV-Infected Ugandan Women. AIDS Behav 2017; 21:2141-2146. [PMID: 27224979 DOI: 10.1007/s10461-016-1433-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The practical feasibility of using prostate specific antigen (PSA) as a biomarker of semen exposure was examined among HIV-infected Ugandan women. Vaginal fluids were obtained with self-collected swabs and a qualitative rapid test (ABAcard®p30) was used to detect PSA. Trained laboratory technicians processed samples on-site and positive PSA tests were compared to self-reported unprotected vaginal sex (UVS) in the last 48 h. A total of 77 women submitted 126 samples for PSA testing at up to three study visits. Of these samples, 31 % (n = 39/126) were PSA positive, and 64 % (n = 25/39) of the positive PSA samples were accompanied by self-report of no UVS at the study visit the PSA was collected. There were no reported difficulties with specimen collection, storage, or processing. These findings provide preliminary data on high levels of misreported UVS among HIV-infected Ugandan women using practically feasible methods for PSA collection and processing.
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Affiliation(s)
- Sarah E Woolf-King
- Department of Medicine, University of California, San Francisco (UCSF), San Francisco, CA, USA.
| | - Winnie Muyindike
- Mbarara University of Science and Technology (MUST), Mbarara, Uganda
| | - Marcia M Hobbs
- School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Adrine Kusasira
- Mbarara University of Science and Technology (MUST), Mbarara, Uganda
| | - Robin Fatch
- Department of Medicine, University of California, San Francisco (UCSF), San Francisco, CA, USA
| | - Nneka Emenyonu
- Department of Medicine, University of California, San Francisco (UCSF), San Francisco, CA, USA
| | - Mallory O Johnson
- Department of Medicine, University of California, San Francisco (UCSF), San Francisco, CA, USA
| | - Judith A Hahn
- Department of Medicine, University of California, San Francisco (UCSF), San Francisco, CA, USA
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Snead MC, Wiener J, Ewumi S, Phillips C, Flowers L, Hylton-Kong T, Medley-Singh N, Legardy-Williams J, Costenbader E, Papp J, Warner L, Black C, Kourtis AP. Prevalence and risk factors associated with STIs among women initiating contraceptive implants in Kingston, Jamaica. Sex Transm Infect 2017; 93:503-507. [PMID: 28476913 DOI: 10.1136/sextrans-2016-052963] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 03/30/2017] [Accepted: 04/18/2017] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND There is limited information on rates of STIs in Jamaica due to syndromic management and limited aetiological surveillance. We examined the prevalence of Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG) and Trichomonas vaginalis (TV) and characteristics associated with STIs among sexually active women who participated in a randomised trial of a progestin implant initiation in Jamaica (the Sino-Implant Study (SIS)). METHODS SIS was a randomised trial conducted in Kingston, Jamaica, from 2012 to 2014 to evaluate whether initiation of the Sino-Implant (II) led to more unprotected sex among women ages 18-44 years. Data collected included self-reported demographic, sexual behaviour information; and vaginal swabs collected at baseline, 1-month and 3-month follow-up visits for a biomarker of recent semen exposure (prostate-specific antigen (PSA)) and for STIs. We examined associations between STIs and PSA, demographics, sexual behaviour and insertion of an implant, with a repeated-measures analysis using generalised estimating equations (SAS Institute, V.9.3). RESULTS Remnant vaginal swabs from 254 of 414 study participants were tested for STIs. At baseline, 29% of participants tested for STIs (n=247) had laboratory-confirmed CT, 5% NG, 23% TV and 45% any STI. In a repeated-measures analysis adjusted for study arm (immediate vs delayed implant insertion), those with PSA detected did not have an increased prevalence of any STI (prevalence ratio (PR)=1.04 (95% CI 0.89 to 1.21)), whereas prevalence decreased for each 1-year increase in age (PR=0.98 (95% CI 0.97 to 0.99)). Immediate implant insertion was not associated with increases in any STI in subsequent visits (PR=1.09 (95% CI 0.94 to 1.27)). CONCLUSIONS Although the prevalence of laboratory-confirmed STIs was high, the immediate initiation of a contraceptive implant was not associated with higher STI prevalence rates over 3 months. TRIAL REGISTRATION NUMBER NCT01684358.
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Affiliation(s)
- Margaret Christine Snead
- Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Jeffrey Wiener
- Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | | | - Christi Phillips
- Division of STD Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Lisa Flowers
- Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | | | | | - Jennifer Legardy-Williams
- Office of Science and Integrated Services, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | | | - John Papp
- Division of STD Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Lee Warner
- Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Carolyn Black
- Division of Scientific Resources, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Athena P Kourtis
- Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
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Abstract
We used data from a prospective study of 300 women attending a sexually transmitted infection clinic in Kingston, Jamaica, to compare participant self-report of recent semen exposure to actual semen exposure measured by prostate-specific antigen in vaginal swabs. Underreporting of semen exposure was significantly more frequent at follow-up than baseline, suggesting that the accuracy of reports of sexual behavior may vary over time.
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Snead MC, Black CM, Kourtis AP. The use of biomarkers of semen exposure in sexual and reproductive health studies. J Womens Health (Larchmt) 2014; 23:787-91. [PMID: 25268551 DOI: 10.1089/jwh.2014.5018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Biomarkers of semen exposure have been used in studies investigating the safety and efficacy of barrier methods of contraception. They have been used as objective indicators of semen exposure when studying sexual behaviors and in human immunodeficiency virus/sexually transmitted infection research interventions where participants are advised to avoid unprotected sex. Semen biomarkers have also been used to assess or validate self-reported sexual behaviors or condom use in reproductive health settings. Prostate-specific antigen (PSA) and Y chromosome DNA (Yc-DNA) have each been evaluated in the past as semen biomarkers and are the most widely used in the field. While both are considered reliable for evaluating exposure to semen, each has unique characteristics. In this report, we summarize the literature and provide some considerations for reproductive health researchers who are interested in using PSA or Yc-DNA as semen biomarkers. We also synthesize our previous published work on the optimal conditions of collecting and storing specimens and assay performance in the presence of other vaginal products that may influence various assays. Semen biomarkers are innovative and promising tools to further study and better understand women's reproductive and sexual health and behavior. More research is needed to better understand the strengths, limitations, and optimal performance conditions of specific assays in vivo.
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Affiliation(s)
- Margaret Christine Snead
- 1 Division of Reproductive Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention , Atlanta, Georgia
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Chang YT, Hayter M, Lin ML. Chinese Adolescents’ Attitudes Toward Sexual Relationships and Premarital Sex. J Sch Nurs 2014; 30:420-9. [DOI: 10.1177/1059840514520996] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study was designed to explore Taiwanese school students’ attitudes toward sexual relationships and premarital sex. This was an exploratory descriptive, qualitative study. Focus groups ( N = 8) were conducted with 47 adolescents from three high schools in Taiwan. Transcripts were transcribed and thematically analyzed using Atlas V 5.0. Adolescent attitudes toward sexual relationships and premarital sexual behavior comprise the following three dimensions: (1) external incentives, (2) the developmental process, and (3) internal control. External incentives include the normalization of sexual behavior between peers, the desire to feel included in a group, parental influence, and media influence. The developmental process includes imagining the sexual experience and onset of sexual activity. Internal control includes the fear of pregnancy, the fear of parental rejection, and the fear of being judged. These findings can provide a reference for designing future sex education curricula and counseling programs for adolescents.
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Affiliation(s)
- Yu-Ting Chang
- Department of Nursing, Tzu Chi College of Technology, Hualien, Taiwan, Republic of China
| | - Mark Hayter
- Faculty of Health and Social Care, University of Hull, Hull, United Kingdom
| | - Mei-Ling Lin
- Department of Nursing, Tzu Chi College of Technology, Hualien, Taiwan, Republic of China
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