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Objectives: To quantify the costs, benefits and cost-effectiveness of three multipathogen point-of-care (POC) testing strategies for detecting common sexually transmitted infections (STIs) compared with standard laboratory testing., Design: Modelling study., Setting: Genitourinary medicine (GUM) services in England., Population: A hypothetical cohort of 965 988 people, representing the annual number attending GUM services symptomatic of lower genitourinary tract infection., Interventions: The decision tree model considered costs and reimbursement to GUM services associated with diagnosing and managing STIs. Three strategies using hypothetical point-of-care tests (POCTs) were compared with standard care (SC) using laboratory-based testing. The strategies were: A) dual POCT for Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG); B) triplex POCT for CT-NG and Mycoplasma genitalium (MG); C) quadruplex POCT for CT-NG-MG and Trichomonas vaginalis (TV). Data came from published literature and unpublished estimates., Primary and Secondary Outcome Measures: Primary outcomes were total costs and benefits (quality-adjusted life years (QALYs)) for each strategy (2016 GB, £) and associated incremental cost-effectiveness ratios (ICERs) between each of the POC strategies and SC. Secondary outcomes were inappropriate treatment of STIs, onward STI transmission, pelvic inflammatory disease in women, time to cure and total attendances., Results: In the base-case analysis, POC strategy C, a quadruplex POCT, was the most cost-effective relative to the other strategies, with an ICER of £36 585 per QALY gained compared with SC when using microcosting, and cost-savings of £26 451 382 when using tariff costing. POC strategy C also generated the most benefits, with 240 467 fewer clinic attendances, 808 fewer onward STI transmissions and 235 135 averted inappropriate treatments compared with SC., Conclusions: Many benefits can be achieved by using multipathogen POCTs to improve STI diagnosis and management. Further evidence is needed on the underlying prevalence of STIs and SC delivery in the UK to reduce uncertainty in economic analyses., Competing Interests: Competing interests: All authors have completed the Unified Competing Interest Form and declare financial support from Innovate UK; EJA, SEH, MJH are employees of Aquarius Population Health (APH), which reports grants from Innovate UK grant to Atlas Genetics, during the conduct of the study; other from Cepheid, St Georges University of London, Enigma Diagnostics and AstraZeneca, on STI and POC research outside the submitted work; RMB is a Lecturer and Programme Director of Economics at St. Angela’s College Sligo/NUI Galway and an academic staff member of the Health Economics and Policy Analysis Centre (HEPAC) at NUI Galway, providing health economic support to Aquarius Population Health on an ad hoc consultancy basis. STS, EH-E, SSF are members of the Applied Diagnostic Research and Evaluation Unit at St George’s, University of London, which has received funding from Atlas Genetics, Alere, Cepheid, SpeeDx and Sekisui. STS has received NIHR funding to develop a POCT with Atlas., (© Author(s) (or their employer(s)) 2018. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Introduction: Non-specific genital infection (NSGI; non- Chlamydia trachomatis , non- Neisseria gonorrhoeae -associated urethritis) is a common diagnosis in symptomatic heterosexual men attending UK sexual health clinics (SHCs). but little is known about the psychosocial impact of this diagnosis., Methods: We conducted an observational study among symptomatic heterosexual men attending SHCs to evaluate the psychosocial impact of an NSGI diagnosis compared with a diagnosis of Chlamydia trachomatis (CT), Neisseria gonorrhoeae or no abnormalities detected focusing on the feasibility of our study methodology. Participants completed a computer-assisted self-interviewing (CASI) including two validated measures of psychosocial impact: the EQ-5D-5L health-related quality of life and Rosenberg Self-Esteem Scale, before diagnostic testing and 2 weeks after receiving test results (follow-up 1 (FU-1)) and a qualitative interview. We compared scores between diagnostic groups using paired t-tests, qualitative data were analysed thematically and feasibility was assessed by process analysis., Results: 60 men completed the baseline CASI (75% response rate). 46 (76.6%) were eligible for follow-up; 11/46 (23.9%) completed the follow-up CASI, and 3/11 (27.3%) completed the qualitative interview. 81.7% of all participants left CASI feedback at baseline: 73.5% reported the questionnaire as 'fine' or 'very good'. Qualitative interview participants reported the study was acceptable. Compared with baseline, among patients completing FU-1, only patients with a diagnosis of NSGI (p<0.05) or CT (p<0.05) showed increased EQ-5D-5L Index, whereas patients with a diagnosis of NSGI (p=0.05) showed decreased mean Rosenberg Self-Esteem Scale score., Conclusions: Although most participants indicated study acceptability at baseline, and we employed measures to increase retention (CASI questionnaires, reminder messages and a focus on men's health), we experienced high loss to follow-up. We found that heterosexual men attending SHCs with symptoms of urethritis experience both positive and negative psychosocial impacts following their clinic attendance, which warrants further investigation., Competing Interests: Competing interests: The Applied Diagnostic Research and Evaluation Unit at St George’s, University of London (STS, EMH-E, SF and AP) receives funding from the National Institute of Health Research (NIHR) i4i Programme (grant number II-LB-0214-20005), Atlas Genetics, Alere, Hologic Cepheid, SpeeDx, Sekisui and Becton Dickinson to develop Point of Care Tests for STIs., (© Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.)