Publications - Bartosz Helfer

Aaron Prosser, Victor Hong, Bartosz Helfer, David Fudge, Janet Patterson, Patricia Rosebush, Benicio N Frey, Paul Links (2023) Delphi consensus study to develop guidelines for the management of adults with borderline personality disorder in the emergency department: a protocol, British Medical Journal Publishing Group, https://doi.org/10.1136/bmjopen-2023-075119

Andreas S Lappas, Bartosz Helfer, Katarzyna Henke-Ciążyńska, Myrto T Samara, Nikos Christodoulou (2023) Antimanic efficacy, tolerability, and acceptability of clonazepam: A systematic review and meta-analysis, J. Clin. Med. 2023, 12(18), 5801; https://doi.org/10.3390/jcm12185801

Bartosz Helfer, Katarzyna Henke-Ciążyńska, Iwo Fober, Robert J Boyle (2023) 76 Preventing overuse of infant formula by examining biological background assumptions, Royal Society of Medicine, https://doi.org/10.1136/EBM-2023-POD.76

DM Skrzypiec, B Helfer, (2023) Efficacy, safety and methodological quality of light therapy and sleep improvement interventions for people with attention deficit hyperactivity disorder (ADHD), Published online by Cambridge University Press: 19 July 2023, DOI: https://doi.org/10.1192/j.eurpsy.2023.1036

Ka Yan Cheung, Loukia Petrou, Bartosz Helfer, Erika Porubayeva, Elena Dolgikh, Sana Ali, Insaf Ali, Lindsay Archibald-Durham, Meredith Merilee Brockway, Polina Bugaeva, Rishma Chooniedass, Pasquale Comberiati, Erika Cortés-Macías, Sofia D’Elios, Gavriela Feketea, Peter Hsu, Musa Abubakar Kana, Tatiana Kriulina, Yuzuka Kunii, Comfort Madaki, Rihab Omer, Diego Peroni, Jana Prokofiev, Melanie Rae Simpson, Naoki Shimojo, Linda P Siziba, Jon Genuneit, Sohini Thakor, Marium Waris, Quan Yuan, Sadia Zaman, Bridget E Young, Brighid Bugos, Matthew Greenhawt, Michael E Levin, Jonathan Zheng, Robert J Boyle, Daniel Munblit (2023) Health and nutrition claims for infant formula: international cross sectional survey, British Medical Journal Publishing Group, doi: https://doi.org/10.1136/bmj-2022-071075

Aaron Prosser, Victor Hong, Bartosz Helfer, David Fudge, Janet Patterson, Patricia Rosebush, Benicio N Frey, Paul Links (2023) Protocol: Delphi consensus study to develop guidelines for the management of adults with borderline personality disorder in the emergency department: a protocol, BMJ Publishing Group, doi: 10.1136/bmjopen-2023-075119

Aaron Prosser, Bartosz Helfer, David Streiner (2023) Estimating the risk reduction of isolation on COVID-19 nonhousehold transmission and severe/critical illness in nonimmune individuals: September to November 2021, Journal of Evaluation in Clinical Practice, doi: https://doi.org/10.1111/jep.13813

Nico Bast, Sara Boxhoorn, Hans Supér, Bartosz Helfer, Leonie Polzer, Christoph Klein, Hannah Cholemkery, Christine M Freitag (2023) Atypical arousal regulation in children with autism but not with attention-deficit/hyperactivity disorder as indicated by pupillometric measures of locus coeruleus activity, Biological Psychiatry: Cognitive Neuroscience and Neuroimaging, https://doi.org/10.1016/j.bpsc.2021.04.010

Patricia Bustos-Valenzuela, August Romeo, Sara Boxhoorn, Bartosz Helfer, Christine M Freitag, Phil Asherson, Hans Supèr (2022) Atypical cognitive vergence responses in children with attention deficit hyperactivity disorder but not with autism spectrum disorder in a facial emotion recognition task, Psychiatry Research Communications, https://doi.org/10.1016/j.psycom.2022.100045

Patricia Bustos-Valenzuela, August Romeo, Sara Boxhoorn, Bartosz Helfer, Christine M Freitag, Phil Asherson, Hans Super (2022) Psychiatry Research Communications, Psychiatry Research, https://doi.org/10.1016/j.psycom.2022.100045

Aaron Prosser, Bartosz Helfer, David L Streiner (2021) Evaluating the number of unvaccinated people needed to exclude to prevent SARS-CoV-2 transmissions, MedRxiv, doi: https://doi.org/10.1101/2021.12.08.21267162

Bartosz Helfer, Jo Leonardi-Bee, Alexandra Mundell, Callum Parr, Despo Ierodiakonou, Vanessa Garcia-Larsen, Cynthia M Kroeger, Zhaoli Dai, Amy Man, Jessica Jobson, Fatemah Dewji, Michelle Kunc, Lisa Bero, Robert J Boyle (2021) Conduct and reporting of formula milk trials: systematic review, British Medical Journal Publishing Group, doi: https://doi.org/10.1136/bmj.n2202

Bartosz Helfer, Sara Boxhoorn, Joanna Songa, Charlotte Steel, Stefanos Maltezos, Philip Asherson (2021) Emotion recognition and mind wandering in adults with attention deficit hyperactivity disorder or autism spectrum disorder, Journal of psychiatric research, https://doi.org/10.1016/j.jpsychires.2020.12.059

Aaron Prosser, Bartosz Helfer, David Streiner (2021) Evaluating the number of unvaccinated people needed to exclude to prevent SARS-CoV-2 transmissions (preprint)

Nico Bast, Sara Boxhoorn, Hans Super, Bartosz Helfer, Leonie Polzer, Christoph Klein, Hannah Cholemkery, Christine M Freitag (2021) Atypical arousal regulation in children with autism but not with ADHD as indicated by pupillometric measures of locus coeruleus activity, Biol Psychiatry Cogn Neurosci Neuroimaging, DOI: 10.1016/j.bpsc.2021.04.010

Bartosz Helfer, Charlotte Steel (2020) Underrated concepts and key research priorities in adult ADHD: Improving explanatory power and fostering progress, Journal of Psychiatric Research, https://doi.org/10.1016/j.jpsychires.2020.12.047

M Kunc, F Dewji, J Jobson, B Helfer, R Boyle (2020) G446 (P) A systematic review evaluating the methodological quality of infant formula trials, BMJ Publishing Group Ltd, doi:https://doi.org/10.1136/archdischild-2020-rcpch.384

Katharine Jarrold, Bartosz Helfer, Mona Eskander, Helen Crawley, Jillian Trabulsi, Laura E Caulfield, Gillian Duffy, Vanessa Garcia-Larsen, Deborah Hayward, Matthew Hyde, Suzan Jeffries, Mikael Knip, Jo Leonardi-Bee, Elizabeth Loder, Caroline J Lodge, Adrian J Lowe, William McGuire, David Osborn, Hildegard Przyrembel, Mary J Renfrew, Paula Trumbo, John Warner, Barbara Schneeman, Robert J Boyle (2020) Guidance for the conduct and reporting of clinical trials of breast milk substitutes, JAMA pediatrics, doi:10.1001/jamapediatrics.2020.0578

Bartosz Helfer, Natali Bozhilova, Ruth E Cooper, Joanna I Douzenis, Stefanos Maltezos, Philip Asherson (2020) The key role of daytime sleepiness in cognitive functioning of adults with attention deficit hyperactivity disorder, European Psychiatry, DOI: https://doi.org/10.1192/j.eurpsy.2020.28

Bartosz Helfer, Stefanos Maltezos, Elizabeth Liddle, Jonna Kuntsi, Philip Asherson (2020) Lateralization of attention in adults with ADHD: Evidence of pseudoneglect, European Psychiatry, DOI: https://doi.org/10.1192/j.eurpsy.2020.68

Stefan Leucht, Anna Chaimani, Dimitris Mavridis, Claudia Leucht, Maximilian Huhn, Bartosz Helfer, Myrto Samara, Andrea Cipriani, John R Geddes, John M Davis (2019) Disconnection of drug-response and placebo-response in acute-phase antipsychotic drug trials on schizophrenia? Meta-regression analysis, Neuropsychopharmacology, doi:https://doi.org/10.1038/s41386-019-0440-6

Katharine Jarrold, Bartosz Helfer, Robert J Boyle (2019) Designing Scientifically Valid Infant Formula Trials Which Support Breastfeeding-Outcomes of a Delphi Consensus Project, BMC

A Colasanti, J Myers, B Helfer, S Lukito, P Asherson, D Nutt, A Lingford-Hughes, S Turton, EA Rabiner, K Rubia (2019) Endogenous opioid release capacity in adult ADHD patients: a pilot study with PET and [C-11] carfentanil, JOURNAL OF CEREBRAL BLOOD FLOW AND METABOLISM

Mr Tim Pickles (2019) Meeting abstracts from the 5th International Clinical Trials Methodology Conference (ICTMC 2019), Trials

Bartosz Helfer (2019) Investigation of the effects of arousal on cognitive performance in adults with ADHD, King’s College London

Bartosz Helfer, Ruth E Cooper, Natali Bozhilova, Stefanos Maltezos, Jonna Kuntsi, Philip Asherson (2019) The effects of emotional lability, mind wandering and sleep quality on ADHD symptom severity in adults with ADHD, European Psychiatry, doi: https://doi.org/10.1016/j.eurpsy.2018.09.006

Stefan Leucht, Anna Chaimani, Claudia Leucht, Maximilian Huhn, Dimitris Mavridis, Bartosz Helfer, Myrto Samara, Andrea Cipriani, John R Geddes, Georgia Salanti, John M Davis (2018) 60 years of placebo-controlled antipsychotic drug trials in acute schizophrenia: meta-regression of predictors of placebo response, Schizophrenia research, doi:https://doi.org/10.1016/j.schres.2018.05.009

Myrto T Samara, Elisabeth Klupp, Bartosz Helfer, Philipp H Rothe, Johannes Schneider‐Thoma, Stefan Leucht (2018) Increasing antipsychotic dose for non response in schizophrenia, John Wiley & Sons, Ltd, doi:https://doi.org/10.1002/14651858.CD011883.pub2

Myrto T Samara, Elisabeth Klupp, Bartosz Helfer, Philipp H Rothe, Johannes Schneider‐Thoma, Stefan Leucht (2018) Increasing antipsychotic dose versus switching antipsychotic for non response in schizophrenia, John Wiley & Sons, Ltd, doi:https://doi.org/10.1002/14651858.CD011884.pub2

Stefan Leucht, Claudia Leucht, Maximilian Huhn, Anna Chaimani, Dimitris Mavridis, Bartosz Helfer, Myrto Samara, Matteo Rabaioli, Susanne Bächer, Andrea Cipriani, John R Geddes, Georgia Salanti, John M Davis (2017) Sixty years of placebo-controlled antipsychotic drug trials in acute schizophrenia: systematic review, Bayesian meta-analysis, and meta-regression of efficacy predictors, Published Online: 25 May 2017 https://doi.org/10.1176/appi.ajp.2017.16121358

Bartosz Helfer (2017) Antidepressants Added to Antipsychotics for Schizophrenia: A Systematic Review and Meta-analysis of Randomized Controlled Trials, Ludwig-Maximilians-Universität zu München

Bartosz Helfer, Myrto T Samara, Maximilian Huhn, Elisabeth Klupp, Claudia Leucht, Yikang Zhu, Rolf R Engel, Stefan Leucht (2016) Efficacy and safety of antidepressants added to antipsychotics for schizophrenia: a systematic review and meta-analysis, Published Online:10 Jun 2016https://doi.org/10.1176/appi.ajp.2016.15081035

Aaron Prosser, Bartosz Helfer, Stefan Leucht (2016) Evidence, not ideology, should guide the use of psychotherapy Reply, BRITISH JOURNAL OF PSYCHIATRY

Aaron Prosser, Bartosz Helfer, Stefan Leucht (2016) Biological v. psychosocial treatments: a myth about pharmacotherapy v. psychotherapy, The British Journal of Psychiatry, doi:https://doi.org/10.1192/bjp.bp.115.178368

Myrto T Samara, Markus Dold, Myrsini Gianatsi, Adriani Nikolakopoulou, Bartosz Helfer, Georgia Salanti, Stefan Leucht (2016) Efficacy, acceptability, and tolerability of antipsychotics in treatment-resistant schizophrenia: a network meta-analysis, JAMA Psychiatry. 2016; 73(3):199-210. doi:10.1001/jamapsychiatry.2015.2955

Yijun Wang, Jun Xia, Bartosz Helfer, Chunbo Li, Stefan Leucht (2016) Valproate for schizophrenia, John Wiley & Sons, Ltd, doi:https://doi.org/10.1002/14651858.CD004028.pub4

Stefan Leucht, Bartosz Helfer, Gerald Gartlehner, John M Davis (2015) How effective are common medications: a perspective based on meta-analyses of major drugs, BMC medicine. doi:https://doi.org/10.1186/s12916-015-0494-1

Bartosz Helfer, Aaron Prosser, Myrto T Samara, John R Geddes, Andrea Cipriani, John M Davis, Dimitris Mavridis, Georgia Salanti, Stefan Leucht (2015) Recent meta-analyses neglect previous systematic reviews and meta-analyses about the same topic: a systematic examination, BMC medicine, doi:https://doi.org/10.1186/s12916-015-0317-4

Bartosz Helfer, Tomasz S Osiejuk (2015) It takes all kinds in acoustic communication: a new perspective on the song overlapping phenomenon, Ethology, doi:https://doi.org/10.1111/eth.12356Citations: 11

Bartosz Helfer, Stefan Leucht, Philipp H Rothe, Myrto T Samara (2015) Increasing antipsychotic dose for non response in schizophrenia, Cochrane database of systematic reviews (Online: Update Software), doi: 10.1002/14651858.CD011883

Stefan Leucht, Bartosz Helfer, Markus Dold, Werner Kissling, John J McGrath (2015) Lithium for schizophrenia, Cochrane Database of Systematic Reviews, doi:https://doi.org/10.1002/14651858.CD003834.pub3

Myrto T Samara, Bartosz Helfer, Philipp H Rothe, Stefan Leucht (2015) Increasing antipsychotic dose versus switching antipsychotic for non response in schizophrenia. Version 1, Cochrane database of systematic reviews (Online: Update Software), doi:10.1002/14651858.CD011884

Bartosz Helfer, Philipp H Rothe, Stefan Leucht, Myrto T Samara (2015) Switching antipsychotic for non response in schizophrenia, Cochrane Database of Systematic Reviews, doi:10.1002/14651858.CD011885

Myrto T Samara, Haoyin Cao, Bartosz Helfer, John M Davis, Stefan Leucht (2014) Chlorpromazine versus every other antipsychotic for schizophrenia: a systematic review and meta-analysis challenging the dogma of equal efficacy of antipsychotic drugs, European Neuropsychopharmacology, doi:https://doi.org/10.1016/j.euroneuro.2014.03.012

Stefan Leucht, Bartosz Helfer, Benno Hartung (2014) Perazine for schizophrenia, Cochrane Database of Systematic Reviews, doi:https://doi.org/10.1002/14651858.CD002832.pub3

Stefan Leucht, Bartosz Helfer, Markus Dold, Werner Kissling, John McGrath (2014) Carbamazepine for schizophrenia, Cochrane Database of Systematic Reviews, doi:https://doi.org/10.1002/14651858.CD001258.pub3

Aleksandra Kupferberg, Markus Huber, Bartosz Helfer, Claus Lenz, Alois Knoll, Stefan Glasauer (2012) Moving just like you: motor interference depends on similar motility of agent and observer, PloS one, doi:https://doi.org/10.1371/journal.pone.0039637

S Leucht, A Chaimani, C Leucht, M Huhn, D Mavridis, B Helfer, M Samara, A Cipriani, JR Geddes, King’s Research Portal

Stefan Leucht, Bartosz Helfer, John M Davis, Additional file 2 Study protocol