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Is the risk for sexually transmissible infections (STI) lower among women with exclusively female sexual partners compared with women with male partners? A retrospective study based on attendees at a Norwegian STI clinic from 2004 to 2014.
Sex Health. 2016 06; 13(3):257-64.SH

Abstract

BACKGROUND

The prevalence of and the risk for sexually transmissible infections (STIs) for women engaging in same-sex sexual behaviour was investigated among women attending an STI clinic.

METHODS

Data from electronic medical records were reviewed and logistic regression used to estimate the odds ratio (OR) of STIs. Women reporting life-time exclusively female partners (WSW) and women reporting female and male partners (WSWM) were compared with women reporting exclusively male partners (WSM). Outcomes included: Chlamydia trachomatis, Mycoplasma genitalium, Neisseria gonorrhoea, HIV and syphilis.

RESULTS

The study population comprised 103564 women (WSW 641, WSWM 12010 and WSM 90913). Overall prevalence of STIs was 8%. Crude OR of STIs for WSW: 0.56 (95% CI 0.39-0.81), for WSWM: 0.99 (95% CI 0.92-1.06) compared with WSM. Multivariate analysis revealed an interaction effect between same-sex sexual behaviour and smoking. Among non-smokers; WSW adjusted OR was 0.41 (95% CI 0.21-0.80), WSWM adjusted OR was 0.91 (95% CI 0.81-1.02) compared with WSM. Among smokers; WSW adjusted OR was 1.03 (95% CI 0.63-1.67) for WSWM adjusted OR was 1.00 (CI 95% 0.93-1.13), compared with WSM.

CONCLUSION

This study, including the largest cohort of women reporting life-time exclusively female partners in an STI study, shows that WSW generally are at lower risk for acquiring STIs than WSM. Smoking WSW, however, had the same risk for acquiring bacterial STIs as WSM and WSWM. Our study suggests that all WSW should receive the same encouragement to test for STIs as WSM.

Authors+Show Affiliations

Department of Rheumatology, Dermatology and Infectious Diseases, The Olafia Clinic p.o.b.4763, Oslo University Hospital, 0506 Oslo, Norway.Oslo Centre for Biostatics and Epidemiology, Department of Biostatics, p.o.b1122 Blindern, Institute of Basic Medical Sciences, University of Oslo, 0317 Oslo, Norway.Department of Rheumatology, Dermatology and Infectious Diseases, The Olafia Clinic p.o.b.4763, Oslo University Hospital, 0506 Oslo, Norway.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27050292

Citation

Molin, Sol-Britt, et al. "Is the Risk for Sexually Transmissible Infections (STI) Lower Among Women With Exclusively Female Sexual Partners Compared With Women With Male Partners? a Retrospective Study Based On Attendees at a Norwegian STI Clinic From 2004 to 2014." Sexual Health, vol. 13, no. 3, 2016, pp. 257-64.
Molin SB, De Blasio BF, Olsen AO. Is the risk for sexually transmissible infections (STI) lower among women with exclusively female sexual partners compared with women with male partners? A retrospective study based on attendees at a Norwegian STI clinic from 2004 to 2014. Sex Health. 2016;13(3):257-64.
Molin, S. B., De Blasio, B. F., & Olsen, A. O. (2016). Is the risk for sexually transmissible infections (STI) lower among women with exclusively female sexual partners compared with women with male partners? A retrospective study based on attendees at a Norwegian STI clinic from 2004 to 2014. Sexual Health, 13(3), 257-64. https://doi.org/10.1071/SH15193
Molin SB, De Blasio BF, Olsen AO. Is the Risk for Sexually Transmissible Infections (STI) Lower Among Women With Exclusively Female Sexual Partners Compared With Women With Male Partners? a Retrospective Study Based On Attendees at a Norwegian STI Clinic From 2004 to 2014. Sex Health. 2016;13(3):257-64. PubMed PMID: 27050292.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Is the risk for sexually transmissible infections (STI) lower among women with exclusively female sexual partners compared with women with male partners? A retrospective study based on attendees at a Norwegian STI clinic from 2004 to 2014. AU - Molin,Sol-Britt, AU - De Blasio,Birgitte Freiesleben, AU - Olsen,Anne Olaug, PY - 2015/10/06/received PY - 2016/02/04/accepted PY - 2016/4/7/entrez PY - 2016/4/7/pubmed PY - 2018/9/11/medline SP - 257 EP - 64 JF - Sexual health JO - Sex Health VL - 13 IS - 3 N2 - BACKGROUND: The prevalence of and the risk for sexually transmissible infections (STIs) for women engaging in same-sex sexual behaviour was investigated among women attending an STI clinic. METHODS: Data from electronic medical records were reviewed and logistic regression used to estimate the odds ratio (OR) of STIs. Women reporting life-time exclusively female partners (WSW) and women reporting female and male partners (WSWM) were compared with women reporting exclusively male partners (WSM). Outcomes included: Chlamydia trachomatis, Mycoplasma genitalium, Neisseria gonorrhoea, HIV and syphilis. RESULTS: The study population comprised 103564 women (WSW 641, WSWM 12010 and WSM 90913). Overall prevalence of STIs was 8%. Crude OR of STIs for WSW: 0.56 (95% CI 0.39-0.81), for WSWM: 0.99 (95% CI 0.92-1.06) compared with WSM. Multivariate analysis revealed an interaction effect between same-sex sexual behaviour and smoking. Among non-smokers; WSW adjusted OR was 0.41 (95% CI 0.21-0.80), WSWM adjusted OR was 0.91 (95% CI 0.81-1.02) compared with WSM. Among smokers; WSW adjusted OR was 1.03 (95% CI 0.63-1.67) for WSWM adjusted OR was 1.00 (CI 95% 0.93-1.13), compared with WSM. CONCLUSION: This study, including the largest cohort of women reporting life-time exclusively female partners in an STI study, shows that WSW generally are at lower risk for acquiring STIs than WSM. Smoking WSW, however, had the same risk for acquiring bacterial STIs as WSM and WSWM. Our study suggests that all WSW should receive the same encouragement to test for STIs as WSM. SN - 1448-5028 UR - https://www.unboundmedicine.com/medline/citation/27050292/Is_the_risk_for_sexually_transmissible_infections__STI__lower_among_women_with_exclusively_female_sexual_partners_compared_with_women_with_male_partners_A_retrospective_study_based_on_attendees_at_a_Norwegian_STI_clinic_from_2004_to_2014_ DB - PRIME DP - Unbound Medicine ER -