Dr Catrin Lewis

2025

• Roberts, N. P. et al. 2025. The International Trauma Interview (ITI): development of a semi-structured diagnostic interview and evaluation in a UK sample. European Journal of Psychotraumatology 16(1), article number: 2494361. (10.1080/20008066.2025.2494361)
• Olff, M. et al. 2025. The impact of trauma and how to intervene: a narrative review of psychotraumatology over the past 15 years. European Journal of Psychotraumatology 16(1), article number: 2458406. (10.1080/20008066.2025.2458406)

2024

• Gelezelyte, O., Guogaite, G., Nomeikaite, A., Bisson, J. I., Lewis, C. and Kazlauskas, E. 2024. Efficacy of an internet-based guided trauma-focused intervention in reducing ICD-11 posttraumatic stress disorder symptoms: study protocol of a randomized controlled trial. BMC Psychiatry 24(1) (10.1186/s12888-024-06097-0)
• Nievergelt, C. M. et al. 2024. Genome-wide association analyses identify 95 risk loci and provide insights into the neurobiology of post-traumatic stress disorder. Nature Genetics 56, pp. 792-808. (10.1038/s41588-024-01707-9)

2023

• Astill Wright, L. et al. 2023. Rewind for posttraumatic stress disorder: a randomised controlled trial. Depression and Anxiety 2023, article number: 6279649. (10.1155/2023/6279649)
• Morris, H., Hatzikiriakidis, K., Dwyer, J., Lewis, C., Halfpenny, N., Miller, R. and Skouteris, H. 2023. Early intervention for residential out-of-home care staff using eye movement desensitization and reprocessing (EMDR). Psychological Trauma: Theory, Research, Practice, and Policy 15(Sup 2), pp. S456-S464. (10.1037/tra0001418)
• Bisson, J. et al. 2023. Pragmatic randomised controlled trial of guided self-help versus individual cognitive behavioural therapy with a trauma focus for post-traumatic stress disorder (RAPID). Health Technology Assessment 27, article number: 26. (10.3310/YTQW8336)
• Simon, N. et al. 2023. The acceptability of a guided internet-based trauma-focused self-help programme (Spring) for post-traumatic stress disorder (PTSD). European Journal of Psychotraumatology 14(2), article number: 2212554.
• Bisson, J. I., Kitchiner, N. J., Lewis, C. and Roberts, N. P. 2023. Guided, internet-based interventions for post-traumatic stress disorder. The Lancet Psychiatry 10(8), pp. 577-579. (10.1016/S2215-0366(23)00226-2)
• Lewis, C., Bailey, L., Ariti, C., Kitchiner, N. J., Robertson, N. P., Simon, N. and Bisson, J. I. 2023. Social support as a predictor of outcomes of cognitive behavioral therapy with a trauma focus delivered face-to-face and via guided internet-based self-help. Journal of Traumatic Stress 36(3), pp. 511-523. (10.1002/jts.22947)

2022

• Maihofer, A. X. et al. 2022. Rare copy number variation in posttraumatic stress disorder. Molecular Psychiatry 27, pp. 5062-5069. (10.1038/s41380-022-01776-4)
• Lewis, C. et al. 2022. COVID-19 related posttraumatic stress disorder in adults with lived experience of psychiatric disorder. Depression and Anxiety 39(7), pp. 564-572. (10.1002/da.23262)
• Lewis, C., Zammit, S., Jones, I. and Bisson, J. 2022. Prevalence and correlates of self-stigma in Post-Traumatic Stress Disorder (PTSD). European Journal of Psychotraumatology 13(1), article number: 2087967. (10.1080/20008198.2022.2087967)
• Oakes, D. J., Pearce, H. A., Roberts, C., Gehrman, P. G., Lewis, C., Jones, I. and Lewis, K. J. 2022. Associations between comorbid anxiety and sleep disturbance in people with bipolar disorder: Findings from actigraphy and subjective sleep measures. Journal of Affective Disorders 309, pp. 165-171. (10.1016/j.jad.2022.04.065)
• Morris, H., Hatzikiriakidis, K., Savaglio, M., Dwyer, J., Lewis, C., Miller, R. and Skouteris, H. 2022. Eye movement desensitization and reprocessing for the treatment and early intervention of trauma among first responders: A systematic review. Journal of Traumatic Stress 35(3), pp. 778-790. (10.1002/jts.22792)
• Bisson, J. I. et al. 2022. Guided, internet based, cognitive behavioural therapy for post-traumatic stress disorder: pragmatic, multicentre, randomised controlled non-inferiority trial (RAPID). BMJ 377, article number: e069405. (10.1136/bmj-2021-069405)
• Maihofer, A. X. et al. 2022. Enhancing discovery of genetic variants for PTSD through integration of quantitative phenotypes and trauma exposure information. Biological Psychiatry 91(7), pp. 626-636. (10.1016/j.biopsych.2021.09.020)
• Lewis, K. J. S. et al. 2022. The effect of the COVID-19 pandemic on mental health in individuals with pre-existing mental illness. BJPsych Open 8(2), article number: e59. (10.1192/bjo.2022.25)
• Lewis, C. and Bisson, J. 2022. Managing the risk of post-traumatic stress disorder (PTSD): best practice for prevention, detection and treatment. Acta Psychiatrica Scandinavica 145(2), pp. 113-115.

2021

• Simon, N. et al. 2021. Internet-based psychological therapies: a qualitative study of National Health Service commissioners and managers views. Psychology and Psychotherapy: Theory, Research and Practice 94(4), pp. 994-1014. (10.1111/papt.12341)
• Astill Wright, L. et al. 2021. High prevalence of somatisation in ICD-11 complex PTSD: a cross sectional cohort study. Journal of Psychosomatic Research 148, article number: 110574. (10.1016/j.jpsychores.2021.110574)
• Mullins, N. et al. 2021. Genome-wide association study of more than 40,000 bipolar disorder cases provides new insights into the underlying biology. Nature Genetics 53, pp. 817-829. (10.1038/s41588-021-00857-4)
• Belsher, B. et al. 2021. Advances in repetitive transcranial magnetic stimulation for posttraumatic stress disorder: a systematic review. Journal of Psychiatric Research 138, pp. 598-606. (10.1016/j.jpsychires.2021.05.011)
• Bisson, J. I. et al. 2021. Preventing the onset of Post Traumatic Stress Disorder. Clinical Psychology Review 81, article number: 102004. (10.1016/j.cpr.2021.102004)
• Simon, N., Robertson, L., Lewis, C., Roberts, N. P., Bethell, A., Dawson, S. and Bisson, J. I. 2021. Internet-based cognitive and behavioural therapies for post-traumatic stress disorder (PTSD) in adults. Cochrane Library 2021(5), article number: CD011710. (10.1002/14651858.CD011710.pub3)
• Astill Wright, L. et al. 2021. The REconsolidaTion Using RewiNd Study (RETURN): trial protocol. European Journal of Psychotraumatology 12(1), article number: 1844439. (10.1080/20008198.2020.1844439)
• Roberts, N. P., Kitchiner, N. J., Lewis, C. E., Downes, A. J. and Bisson, J. I. 2021. Psychometric properties of the PTSD Checklist for DSM-5 in a sample of trauma exposed mental health service users. European Journal of Psychotraumatology 12(1), article number: 1863578. (10.1080/20008198.2020.1863578)
• Hoskins, M. D. et al. 2021. Pharmacological therapy for post-traumatic stress disorder: a systematic review and meta-analysis of monotherapy, augmentation and head-to-head approaches. European Journal of Psychotraumatology 12(1), article number: 1802920. (10.1080/20008198.2020.1802920)
• Hoskins, M. D. et al. 2021. Pharmacological-assisted psychotherapy for post-traumatic stress disorder: a systematic review and meta-analysis. European Journal of Psychotraumatology 12(1), article number: 1853379. (10.1080/20008198.2020.1853379)

2020

• Bisson, J. I., van Gelderen, M., Roberts, N. P. and Lewis, C. 2020. Non-pharmacological and non-psychological approaches to the treatment of PTSD: results of a systematic review and meta-analyses. European Journal of Psychotraumatology 11(1), article number: 1795361. (10.1080/20008198.2020.1795361)
• Lewis, C., Lewis, K., Kitchiner, N., Isaac, S., Jones, I. and Bisson, J. I. 2020. Sleep disturbance in post-traumatic stress disorder (PTSD): a systematic review and meta-analysis of actigraphy studies. European Journal of Psychotraumatology 11(1), article number: 1767349. (10.1080/20008198.2020.1767349)
• Barawi, K. S., Lewis, C., Simon, N. and Bisson, J. 2020. A systematic review of factors associated with outcome of psychological treatments for post-traumatic stress disorder. European Journal of Psychotraumatology 11(1), article number: 1774240. (10.1080/20008198.2020.1774240)
• Lewis, C., Roberts, N., Andrew, M., Starling, E. and Bisson, J. 2020. Psychological therapies for post-traumatic stress disorder in adults: systematic review and meta-analysis. European Journal of Psychotraumatology 11(1), article number: 1729633. (10.1080/20008198.2020.1729633)
• Lewis, C., Roberts, N., Gibson, S. and Bisson, J. 2020. Dropout from psychological therapies for post-traumatic stress disorder (PTSD) in adults: systematic review and meta-analysis. European Journal of Psychotraumatology 11(1), article number: 1709709. (10.1080/20008198.2019.1709709)

2019

• Roberts, N. P., Kitchiner, N. J., Kenardy, J., Lewis, C. E. and Bisson, J. I. 2019. Early psychological intervention following recent trauma: A systematic review and meta-analysis. European Journal of Psychotraumatology Supplement 10(1), article number: 1695486. (10.1080/20008198.2019.1695486)
• Lewis, C., Roberts, N., Simon, N., Bethell, A. and Bisson, J. 2019. Internet-based cognitive behavioural therapy for post-traumatic stress disorder: systematic review and meta- analysis. Acta Psychiatrica Scandinavica 140(6), pp. 508-521. (10.1111/acps.13079)
• Brydges, N. M. et al. 2019. Childhood stress impairs social function through AVP-dependent mechanisms. Translational Psychiatry 9(1), article number: 330. (10.1038/s41398-019-0678-0)
• Astil Wright, L., Sijbrandij, M., Sinnerton, R., Lewis, C., Roberts, N. and Bisson, J. 2019. Pharmacological prevention and early treatment of post-traumatic stress disorder and acute stress disorder: a systematic review and meta-analysis. Translational Psychiatry 9, article number: 334. (10.1038/s41398-019-0673-5)
• Kitchiner, N. J., Lewis, C., Roberts, N. P. and Bisson, J. I. 2019. Active duty and ex-serving military personnel with post-traumatic stress disorder treated with psychological therapies: systematic review and meta-analysis. European Journal of Psychotraumatology 10(1), article number: 1684226. (10.1080/20008198.2019.1684226)
• Underwood, J., Kendall, K., Berrett, J., Lewis, C., Anney, R., Van den Bree, M. and Hall, J. 2019. Autism spectrum disorder diagnosis in adults: phenotype and genotype findings from a clinically derived cohort. British Journal of Psychiatry 215(5), pp. 647-653. (10.1192/bjp.2019.30)
• Nievergelt, C. M. et al. 2019. International meta-analysis of PTSD genome-wide association studies identifies sex- and ancestry-specific genetic risk loci. Nature Communications 10, article number: 4558. (10.1038/s41467-019-12576-w)
• Simon, N., McGillivray, L., Roberts, N., Barawi, K., Lewis, C. and Bisson, J. 2019. Acceptability of internet-based cognitive behavioural therapy (i-CBT) for post-traumatic stress disorder (PTSD): a systematic review. European Journal of Psychotraumatology 10(1), article number: 1646092. (10.1080/20008198.2019.1646092)
• Bisson, J. et al. 2019. The international society for traumatic stress studies new guidelines for the prevention and treatment of Posttraumatic Stress Disorder: methodology and development process. Journal of Traumatic Stress 32(4), pp. 475-483. (10.1002/jts.22421)
• Simon, N., Roberts, N. P., Lewis, C. E., van Gelderen, M. J. and Bisson, J. I. 2019. Associations between perceived social support, post-traumatic stress disorder (PTSD), and complex PTSD (CPTSD): implications for treatment. European Journal of Psychotraumatology 10(1), article number: 1573129. (10.1080/20008198.2019.1573129)

2018

• Nollett, C. et al. 2018. Pragmatic RAndomised controlled trial of a trauma-focused guided self-help Programme versus InDividual trauma-focused cognitive Behavioural therapy for post-traumatic stress disorder (RAPID): trial protocol. BMC Psychiatry 18(1), article number: 77. (10.1186/s12888-018-1665-3)
• Zammit, S. et al. 2018. Undetected post-traumatic stress disorder in secondary-care mental health services: systematic review. British Journal of Psychiatry 212(1), pp. 11-18. (10.1192/bjp.2017.8)

2017

• Lewis, C., Farewell, D., Groves, V., Kitchiner, N. J., Roberts, N., Vick, T. and Bisson, J. 2017. Internet-based guided self-help for post-traumatic stress disorder (PTSD): randomised controlled trial. Depression and Anxiety 34(6), pp. 555-565. (10.1002/da.22645)
• Lewis, C., Raisanen, L., Bisson, J. I., Jones, I. R. and Zammit, S. 2017. Trauma exposure and undetected Post-Traumatic Stress Disorder (PTSD) among adults with a mental disorder. Depression and Anxiety 35(2), pp. 178-184. (10.1002/da.22707)

2016

• Nishi, D. et al. 2016. Adverse childhood experiences, support, and the perception of ability to work in adults with disability. PLoS ONE 11(7), article number: e0157726. (10.1371/journal.pone.0157726)

2015

• Bisson, J. I., Cosgrove, S., Lewis, C. and Roberts, N. P. 2015. Post-traumatic stress disorder. BMJ 351, article number: h6161. (10.1136/bmj.h6161)
• Maier, R. et al. 2015. Joint analysis of psychiatric disorders increases accuracy of risk prediction for schizophrenia, bipolar disorder, and major depressive disorder. American Journal of Human Genetics 96(2), pp. 283-294. (10.1016/j.ajhg.2014.12.006)

2013

• Lewis, C., Roberts, N. P., Vick, T. L. and Bisson, J. I. 2013. Development of a guided self-help (GSH) program for the treatment of mild-to-moderate posttraumatic stress disorder (PTSD). Depression and Anxiety 30(11), pp. 1121-1128. (10.1002/da.22128)
• Bisson, J. I., Roberts, N. P., Andrew, M., Cooper, R. and Lewis, C. 2013. Psychological therapies for chronic post-traumatic stress disorder (PTSD) in adults. Cochrane Database Syst Rev. 2013 (10.1002/14651858.CD003388.pub4)

2012

• Lewis, C., Pearce, J. and Bisson, J. I. 2012. Efficacy, cost-effectiveness and acceptability of self-help interventions for anxiety disorders: systematic review. British Journal of Psychiatry 200(1), pp. 15-21. (10.1192/bjp.bp.110.084756)

2011

• Lewis, C. 2011. Phase I development of a guided self help (GSH) programme for the treatment of mild to moderate post traumatic stress disorder (PTSD). PhD Thesis, Cardiff University.