Items where Author is "Schmidt, Axel J"
Number of items: 79.
2022
Changes in the user profiles of HIV pre-exposure prophylaxis (PrEP) before and after PrEP reimbursement. (2022)
Ahaus, Patrick; Schmidt, Axel J; Skaletz-Rorowski, Adriane; Uhrmacher, Mona; Serova, Katja; Kayser, Arne; Wach, Janet; Nambiar, Sandeep; Brockmeyer, Norbert H; Potthoff, Anja
Unsupervised machine learning predicts future sexual behaviour and sexually transmitted infections among HIV-positive men who have sex with men. (2022)
Andresen, Sara; Balakrishna, Suraj; Mugglin, Catrina; Schmidt, Axel J; Braun, Dominique L; Marzel, Alex; Doco Lecompte, Thanh; Darling, Katharine Ea; Roth, Jan A; Schmid, Patrick; Bernasconi, Enos; Günthard, Huldrych F; Rauch, Andri; Kouyos, Roger D; Salazar-Vizcaya, Luisa; Swiss HIV Cohort Study
Predictors of knowledge of and access to biomedical prevention among MSM and transgender men in Latin America: Results from the Latin American internet survey. (2022)
Avelino-Silva, Vivian Iida; Vasconcelos, Ricardo; Cerqueira, Natalia B; Marcus, Ulrich; Schmidt, Axel Jeremias; Veras, Maria Amelia
What is the empirical basis for converting banded ordinal data on numbers of sex partners among MSM into a continuous scale level variable? A secondary analysis of 13 surveys across 17 countries. (2022)
Mendez-Lopez, Ana; Hickson, Ford; Jansen, Klaus; Lachowsky, Nathan; Burns, Fiona; Folch, Cinta; Velter, Annie; Weatherburn, Peter; Marcus, Ulrich; von Rüden, Ursula; Mirandola, Massimo; Gios, Lorenzo; Frankis, Jamie; Brennan, David J; Schmidt, Axel J
Social and behavioural determinants of syphilis: Modelling based on repeated cross-sectional surveys from 2010 and 2017 among 278,256 men who have sex with men in 31 European countries. (2022)
Mendez-Lopez, Ana; Stuckler, David; Marcus, Ulrich; Hickson, Ford; Noori, Teymur; Whittaker, Robert N; Jansen, Klaus; Diaz, Asuncion; Henszel, Lukasz; Velter, Annie; Semenza, Jan C; Schmidt, Axel J
Latin American Internet Survey for Men who have Sex with Men (LAMIS-2018): Design, methods and implementation. (2022)
Reyes-Díaz, Michael; Celly, Ana; Folch, Cinta; Lorente, Nicolas; Stuardo, Valeria; Veras, Maria Amelia; Barros, Henrique; Meireles, Paula; Ramírez, Dorian; Jonas, Kai J; Marcus, Ulrich; Schmidt, Axel J; Caceres, Carlos F; Casabona, Jordi
Impact of Migration and Acculturation on Turkish Men Who Have Sex with Men in Germany: Results from the 2010 European MSM Internet Survey. (2022)
Schmidt, Axel J; Ross, Michael W; Berg, Rigmor C; Altan, Peyman
Stigmatizing Policies Interact with Mental Health and Sexual Behaviours to Structurally Induce HIV Diagnoses Among European Men Who Have Sex with Men. (2022)
Stojanovski, Kristefer; King, Elizabeth J; Amico, K Rivet; Eisenberg, Marisa C; Geronimus, Arline T; Baros, Sladjana; Schmidt, Axel J
Comparison of the Influence of Internalized Homonegativity on Sexual Risk Behavior of Men Who Have Sex with Men in Spain and Turkey. (2022)
Sönmez, İbrahim; Berg, Rigmor C; Yazıcılaroğlu, Sami Sarper; Thurlby, Natalie; Schmidt, Axel J
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HIV pre-exposure prophylaxis during the SARS-CoV-2 pandemic: Results from a prospective observational study in Germany. (2022)
Uhrmacher, M; Skaletz-Rorowski, A; Nambiar, S; Schmidt, AJ; Ahaus, P; Serova, K; Mordhorst, I; Kayser, A; Wach, J; Tiemann, C; Münstermann, D; Brockmeyer, NH; Potthoff, A
Changes in mental and sexual health among MSM using HIV pre-exposure prophylaxis during the SARS-CoV-2 pandemic: longitudinal analysis of the SwissPrEPared cohort study. (2022)
Winter, Babette L; Hovaguimian, Frédérique; Kouyos, Roger D; Schmidt, Axel Jeremias; Bernasconi, Enos; Braun, Dominique L; Calmy, Alexandra; Notter, Julia; Stoeckle, Marcel; Surial, Bernard; Christinet, Vanessa; Cavassini, Matthias; Depmeier, Carsten; Läuchli, Severin; Boffi El Amari, Emmanuelle; Reinacher, Matthias; Rasi, Manuela; Bruggmann, Philip; Haerry, David; Bize, Raphaël; Low, Nicola; Lehner, Andreas; Quednow, Boris B; Fehr, Jan S; Hampel, Benjamin
Retrospective, matched case-control analysis of tickborne encephalitis vaccine effectiveness by booster interval, Switzerland 2006-2020. (2022)
Zens, Kyra D; Haile, Sarah R; Schmidt, Axel J; Altpeter, Ekkehardt S; Fehr, Jan S; Lang, Phung
2021
Surveillance of tuberculosis in Switzerland and the Principality of Liechtenstein, 2009 to 2019. (2021)
Altpeter, Ekkehardt S; Schmidt, Axel J
Assessing the drivers of syphilis among men who have sex with men in Switzerland reveals a key impact of screening frequency: A modelling study. (2021)
Balakrishna, Suraj; Salazar-Vizcaya, Luisa; Schmidt, Axel J; Kachalov, Viacheslav; Kusejko, Katharina; Thurnheer, Maria Christine; Roth, Jan A; Nicca, Dunja; Cavassini, Matthias; Battegay, Manuel; Schmid, Patrick; Bernasconi, Enos; Günthard, Huldrych F; Rauch, Andri; Kouyos, Roger D; Swiss HIV Cohort Study (SHCS)
Pediatric Tuberculosis Disease during Years of High Refugee Arrivals: A 6-Year National Prospective Surveillance Study. (2021)
Fritschi, Nora; Schmidt, Axel J; Hammer, Jürg; Ritz, Nicole; Swiss pediatric surveillance unit
Response to a sexual risk reduction intervention provided in combination with hepatitis C treatment by HIV/HCV co-infected men who have sex with men: a reflexive thematic analysis. (2021)
Künzler-Heule, Patrizia; Fierz, Katharina; Schmidt, Axel Jeremias; Rasi, Manuela; Bogdanovic, Jasmina; Kocher, Agnes; Engberg, Sandra; Battegay, Manuel; Nöstlinger, Christiana; Lehner, Andreas; Kouyos, Roger; Schmid, Patrick; Braun, Dominique Laurent; Fehr, Jan; Nicca, Dunja
Chemsex and diagnoses of syphilis, gonorrhoea and chlamydia among men who have sex with men in the UK: a multivariable prediction model using causal inference methodology. (2021)
MacGregor, Louis; Kohli, Manik; Looker, Katharine J; Hickson, Ford; Weatherburn, Peter; Schmidt, Axel J; Turner, Katy Me
Changes in the prevalence of self-reported sexually transmitted bacterial infections from 2010 and 2017 in two large European samples of men having sex with men-is it time to re-evaluate STI-screening as a control strategy? (2021)
Marcus, Ulrich; Mirandola, Massimo; Schink, Susanne B; Gios, Lorenzo; Schmidt, Axel J
Structural stigma and sexual minority men's depression and suicidality: A multilevel examination of mechanisms and mobility across 48 countries. (2021)
Pachankis, John E; Hatzenbuehler, Mark L; Bränström, Richard; Schmidt, Axel J; Berg, Rigmor C; Jonas, Kai; Pitoňák, Michal; Baros, Sladjana; Weatherburn, Peter
Tick-borne encephalitis (TBE) in Switzerland: does the prolongation of vaccine booster intervals result in an increased risk of breakthroughs? (2021)
Schmidt, Axel J; Altpeter, Ekkehardt; Graf, Simone; Steffen, Robert
Influence of Internalised Homonegativity on Sexual Risk Behaviour of Men Who Have Sex with Men in Spain. (2021)
Sönmez, İbrahim; Folch, Cinta; Lorente, Nicolas; Berg, Rigmor C; Thurlby, Natalie; Schmidt, Axel J
Surveillance of Employees of Swiss Federal Asylum Centres for Latent Tuberculosis Infection. (2021)
Zellweger, Jean-Pierre; Zellweger-Landry, Ariane; Egger, Jean-Marie; Koller-Doser, Annette; Schmidt, Axel Jeremias
2020
Are men who have sex with men in Europe protected from hepatitis B? (2020)
Brandl, M; Schmidt, AJ; Marcus, U; An der Heiden, M; Dudareva, S
Sexual and Mental Health Inequalities across Gender Identity and Sex-Assigned-at-Birth among Men-Who-Have-Sex-with-Men in Europe: Findings from EMIS-2017. (2020)
Hickson, Ford; Appenroth, Max; Koppe, Uwe; Schmidt, Axel J; Reid, David; Weatherburn, Peter
Impact of class-level labelling change on prescriptions of antidepressants for adolescents: An interrupted time-series study using a health insurance claims database in Japan, 2005-2013. (2020)
Ogino, Yumiko; Schmidt, Axel Jeremias
Clusters of Sexual Behavior in Human Immunodeficiency Virus-positive Men Who Have Sex With Men Reveal Highly Dissimilar Time Trends. (2020)
Salazar-Vizcaya, Luisa; Kusejko, Katharina; Schmidt, Axel J; Carrillo-Montoya, Germán; Nicca, Dunja; Wandeler, Gilles; Braun, Dominique L; Fehr, Jan; Darling, Katharine EA; Bernasconi, Enos; Schmid, Patrick; Günthard, Huldrych F; Kouyos, Roger D; Rauch, Andri
The Swiss STAR trial - an evaluation of target groups for sexually transmitted infection screening in the sub-sample of men. (2020)
Schmidt, Axel Jeremias; Rasi, Manuela; Esson, Cate; Christinet, Vanessa; Ritzler, Michael; Lung, Thomas; Hauser, Christoph V; Stöckle, Marcel; Jouinot, Florent; Lehner, Andreas; Lange, Katharina; Konrad, Torsten; Vernazza, Pietro L
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The Swiss STAR trial – an evaluation of target groups for sexually transmitted infection screening in the sub-sample of women. (2020)
Vernazza, Pietro; Rasi, Manuela; Ritzler, Michael; Dost, Ferah; Stoffel, Milena; Aebi-Popp, Karoline; Hauser, Christoph V; Esson, Cate; Lange, Katharina; Risch, Lorenz; Schmidt, Axel J
2019
Drug use among men who have sex with men in Ireland: Prevalence and associated factors from a national online survey. (2019)
Barrett, P; O'Donnell, K; Fitzgerald, M; Schmidt, AJ; Hickson, F; Quinlan, M; Keogh, P; O'Connor, L; McCartney, D; Igoe, D
Links between transactional sex and HIV/STI-risk and substance use among a large sample of European men who have sex with men. (2019)
Berg, Rigmor C; Weatherburn, Peter; Marcus, Ulrich; Schmidt, Axel J
Estimating the 'PrEP Gap': how implementation and access to PrEP differ between countries in Europe and Central Asia in 2019. (2019)
Hayes, Rosalie; Schmidt, Axel J; Pharris, Anastasia; Azad, Yusef; Brown, Alison E; Weatherburn, Peter; Hickson, Ford; Delpech, Valerie; Noori, Teymur; ECDC Dublin Declaration Monitoring Network
Screening HIV-positive men who have sex with men for hepatitis C re-infection risk: is a single question on condom-use enough? A sensitivity analysis. (2019)
Künzler-Heule, Patrizia; Engberg, Sandra; Battegay, Manuel; Schmidt, Axel J; Fierz, Katharina; Nguyen, Huyen; Kocher, Agnes; Nöstlinger, Christiana; Hampel, Benjamin; Stöckle, Marcel; Béguelin, Charles; Delaloye, Julie; Schmid, Patrick; Flepp, Markus; Rougement, Mathieu; Braun, Dominique Laurent; Fehr, Jan; Nicca, Dunja; Swiss HIV Cohort Study (SHCS)
The Denominator problem: estimating the size of local populations of men-who-have-sex-with-men and rates of HIV and other STIs in Switzerland. (2019)
Schmidt, Axel Jeremias; Altpeter, Ekkehardt
Population size and self-reported characteristics and sexual preferences of men-who-have-sex-with-men (MSM) in Germany based on social network data. (2019)
Scholz, Stefan Michael; Damm, Oliver; Elkenkamp, Svenja; Marcus, Ulrich; Greiner, Wolfgang; Schmidt, Axel Jeremias
European Men-Who-Have-Sex-With-Men Internet Survey (EMIS-2017): Design and Methods. (2019)
Weatherburn, Peter; Hickson, Ford; Reid, David S; Marcus, Ulrich; Schmidt, Axel J
2018
Surveillance of sexualised drug use - the challenges and the opportunities. (2018)
Giraudon, Isabelle; Schmidt, Axel Jeremias; Mohammed, Hamish
Inequalities in HIV testing uptake and needs among men who have sex with men living in Ireland: findings from an internet survey. (2018)
O'Donnell, K; Fitzgerald, M; Quinlan, M; Hickson, F; Keogh, P; Schmidt, AJ; McCartney, D; Barrett, P; O'Dea, S; Igoe, D
2017
[Data on the sexual health of providers and clients of sexual services for men who have sex with men in Germany]. (2017)
Kramer, S; Schmidt, AJ; Marcus, U
Lack of HIV testing and dissatisfaction with HIV testing and counselling among men having sex with men in Hungary. (2017)
Nyitray, Alan G; Bagyinszky, Ferenc; Ross, Michael W; Schmidt, Axel J
Anti-LGBT and Anti-Immigrant Structural Stigma: An Intersectional Analysis of Sexual Minority Men's HIV Risk When Migrating to or Within Europe. (2017)
Pachankis, JE; Hatzenbuehler, ML; Berg, RC; Fernández-Dávila, P; Mirandola, M; Marcus, U; Weatherburn, P; Schmidt, AJ
Blood donor deferral policies across Europe and characteristics of men whohave sex with men screened for human immunodeficiency virus in bloodestablishments: data from the European Men-who-have-sex-with-men Internet Survey (EMIS). (2017)
Schink, Susanne B; Offergeld, Ruth; Schmidt, Axel J; Marcus, Ulrich
Structural Validation and Multiple Group Assessment of the Short Internalized Homonegativity Scale in Homosexual and Bisexual Men in 38 European Countries: Results From the European MSM Internet Survey. (2017)
Tran, Ha; Ross, Michael W; Diamond, Pamela M; Berg, Rigmor C; Weatherburn, Peter; Schmidt, Axel J
2016
Increased incidence of syphilis in men who have sex with men and risk management strategies, Germany, 2015. (2016)
Jansen, Klaus; Schmidt, Axel J; Drewes, Jochen; Bremer, Viviane; Marcus, Ulrich
Factors associated with unprotected anal sex with multiple non-steady partners in the past 12 months: results from the European Men-Who-Have-Sex-With-Men Internet Survey (EMIS 2010). (2016)
Kramer, Sarah C; Schmidt, Axel Jeremias; Berg, Rigmor C; Furegato, Martina; Hospers, Harm; Folch, Cinta; Marcus, Ulrich; EMIS Network
The Geography of Sexual Orientation: Structural Stigma and Sexual Attraction, Behavior, and Identity Among Men Who Have Sex with Men Across 38 European Countries. (2016)
Pachankis, JE; Hatzenbuehler, ML; Mirandola, M; Weatherburn, P; Berg, RC; Marcus, U; Schmidt, AJ
Party and Play in the Closet? Exploring Club Drug Use Among Swedish Men Who Have Sex With Men. (2016)
Petersson, Frida JM; Tikkanen, Ronny; Schmidt, Axel J
Illicit drug use among gay and bisexual men in 44 cities: Findings from the European MSM Internet Survey (EMIS). (2016)
Schmidt, Axel J; Bourne, Adam; Weatherburn, Peter; Reid, David; Marcus, Ulrich; Hickson, Ford; EMIS Network
Response to the calculation of population attributable fractions (PAFs) of risk factors for hepatitis C transmission. (2016)
Schmidt, Axel Jeremias; Bremer, Viviane
Determinants of never having tested for HIV among MSM in the Netherlands. (2016)
den Daas, Chantal; Doppen, Martine; Schmidt, Axel J; Op de Coul, Eline
2015
The Relationship of Internalized Homonegativity to Sexual Health and Well-Being Among Men in 38 European Countries Who Have Sex With Men. (2015)
Berg, Rigmor C; Weatherburn, Peter; Ross, Michael W; Schmidt, Axel J
The HIV care cascade in Switzerland: reaching the UNAIDS/WHO targets for patients diagnosed with HIV. (2015)
Kohler, Philipp; Schmidt, Axel J; Cavassini, Matthias; Furrer, Hansjakob; Calmy, Alexandra; Battegay, Manuel; Bernasconi, Enos; Ledergerber, Bruno; Vernazza, Pietro; Swiss HIV Cohort Study
Antiretroviral therapy and reasons for not taking it among men having sex with men (MSM)--results from the European MSM Internet Survey (EMIS). (2015)
Marcus, Ulrich; Hickson, Ford; Weatherburn, Peter; Furegato, Martina; Breveglieri, Michele; Berg, Rigmor C; Schmidt, Axel J; EMIS network
Hidden from health: structural stigma, sexual orientation concealment, and HIV across 38 countries in the European MSM Internet Survey. (2015)
Pachankis, John E; Hatzenbuehler, Mark L; Hickson, Ford; Weatherburn, Peter; Berg, Rigmor C; Marcus, Ulrich; Schmidt, Axel J
2014
Transactional Sex: Supply and Demand Among European Men Who have Sex with Men (MSM) in the Context of Local Laws. (2014)
Berg, Rigmor C; Schmidt, Axel J; Weatherburn, Peter; The Emis Network
Erratum zu: Defizite in den Angeboten zur STI-Diagnostik für Männer mit gleichgeschlechtlichen Sexualkontakten in deutschsprachigen Städten. (2014)
Schmidt, AJ; Marcus, U
Prevalence of hepatitis C in a Swiss sample of men who have sex with men: whom to screen for HCV infection? (2014)
Schmidt, Axel J; Falcato, Luis; Zahno, Benedikt; Burri, Andrea; Regenass, Stephan; Müllhaupt, Beat; Bruggmann, Philip
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2013
What constitutes the best sex life for gay and bisexual men? Implications for HIV prevention. (2013)
Bourne, Adam; Hammond, Gary; Hickson, Ford; Reid, David; Schmidt, Axel J; Weatherburn, Peter; EMIS Network
HIV testing among Portuguese men who have sex with men--results from the European MSM Internet Survey (EMIS). (2013)
Carvalho, C; Fuertes, R; Lucas, R; Martins, A; Campos, MJ; Mendão, L; Schmidt, AJ; Barros, H
Estimating the size of the MSM populations for 38 European countries by calculating the survey-surveillance discrepancies (SSD) between self-reported new HIV diagnoses from the European MSM internet survey (EMIS) and surveillance-reported HIV diagnoses among MSM in 2009. (2013)
Marcus, Ulrich; Hickson, Ford; Weatherburn, Peter; Schmidt, Axel J; EMIS Network
Age biases in a large HIV and sexual behaviour-related internet survey among MSM. (2013)
Marcus, Ulrich; Hickson, Ford; Weatherburn, Peter; Schmidt, Axel J; EMIS network
Internalised homonegativity predicts HIV-associated risk behavior in European men who have sex with men in a 38-country cross-sectional study: some public health implications of homophobia. (2013)
Ross, Michael W; Berg, Rigmor C; Schmidt, Axel J; Hospers, Harm J; Breveglieri, Michele; Furegato, Martina; Weatherburn, Peter; European MSM Internet Survey (EMIS) Network
Defizite in den Angeboten zur STI-Diagnostik für Männer mit gleichgeschlechtlichen Sexualkontakten in deutschsprachigen Städten. Ergebnisse des Europäischen MSM-Internet-Surveys (EMIS). (2013)
Schmidt, AJ; Marcus, U
Comparison of the performance of STI screening services for gay and bisexual men across 40 European cities: results from the European MSM Internet Survey. (2013)
Schmidt, Axel J; Hickson, Ford; Weatherburn, Peter; Marcus, Ulrich; EMIS Network
The European Men-Who-Have-Sex-With-Men Internet Survey (EMIS): Design and Methods. (2013)
Weatherburn, Peter; Schmidt, Axel J; Hickson, Ford; Reid, David; Berg, Rigmor C; Hospers, Harm J; Marcus, Ulrich
2012
Structural and environmental factors are associated with internalised homonegativity in men who have sex with men: findings from the European MSM Internet Survey (EMIS) in 38 countries. (2012)
Berg, Rigmor C; Ross, Michael W; Weatherburn, Peter; Schmidt, Axel J
Prevalence of HIV among MSM in Europe: comparison of self-reported diagnoses from a large scale internet survey and existing national estimates. (2012)
Marcus, Ulrich; Hickson, Ford; Weatherburn, Peter; Schmidt, Axel J; EMIS Network
[AIDS. New challenges for social and medical prevention]. (2012)
Rosenbrock, R; Schmidt, AJ
2011
Schwule Männer und HIV/Aids: Lebensstile, Sex, Risikoverhalten 2010. Eine Befragung im Auftrag der Bundeszentrale für gesundheitliche Aufklärung, Köln; in Zusammenarbeit mit dem European MSM Internet Sex Survey (EMIS). (2011)
Bochow, M; Lenuweit, S; Schmidt, AJ
HIV serosorting among HIV-positive men who have sex with men is associated with increased self-reported incidence of bacterial sexually transmissible infections. (2011)
Marcus, Ulrich; Schmidt, Axel J; Hamouda, Osamah
Alles auf GUM. Warum wir in Europas Metropolen Zentren für schwule Gesundheit brauchen. (2011)
Schmidt, AJ
Self-reported history of sexually transmissible infections (STIs) and STI-related utilization of the German health care system by men who have sex with men: data from a large convenience sample. (2011)
Schmidt, Axel J; Marcus, Ulrich
Trouble with bleeding: risk factors for acute hepatitis C among HIV-positive gay men from Germany--a case-control study. (2011)
Schmidt, Axel J; Rockstroh, Jürgen K; Vogel, Martin; An der Heiden, Matthias; Baillot, Armin; Krznaric, Ivanka; Radun, Doris
2009
"Das schnelle Date". Internetgestützte Sexkontakte und HIV-Infektionsrisiko. Ergebnisse einer 2006 durchgeführten Internetbefragung. (2009)
Bochow, M; Schmidt, AJ; Grote, S
Estimating the regional distribution of men who have sex with men (MSM) based on Internet surveys. (2009)
Marcus, Ulrich; Schmidt, Axel J; Hamouda, Osamah; Bochow, Michael
The denominator problem: estimating MSM-specific incidence of sexually transmitted infections and prevalence of HIV using population sizes of MSM derived from Internet surveys. (2009)
Marcus, Ulrich; Schmidt, Axel J; Kollan, Christian; Hamouda, Osamah
Trends in Risk Taking and Risk Reduction Among German MSM. Results of Follow-Up Surveys "Gay Men and AIDS" 1991-2007. (2009)
Schmidt, AJ; Bochow, M
