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Name: Brooke Levis

Email Address: brooke.levis@mail.mcgill.ca

Position: Postdoctoral Research Fellow

Biography:

Born and raised in Montreal, Brooke completed her BSc in Neuroscience at McGill University (2012), followed by an MSc in Epidemiology (2014) and a PhD in Epidemiology (initial thesis submitted August 2019). 

 

Brooke began working under the supervision of Dr. Brett Thombs in 2009 as an undergraduate thesis student studying psychosocial aspects of scleroderma. Throughout her graduate training, she transitioned to quantitative epidemiology, with a focus on evaluating the diagnostic test accuracy of depression screening tools. In 2012, she and Dr. Thombs created the DEPRESsion Screening Data (DEPRESSD) Project, as a framework for conducting individual participant data (IPD) meta-analyses on the diagnostic accuracy of the most commonly used depression screening tools. Her masters project was a pilot study for the DEPRESSD Project, and she examined selective cutoff reporting in studies of diagnostic test accuracy of depression screening tools. During her doctoral studies, she continued to develop and expand DEPRESSD Project, and she used data from the registry to conduct a series of IPD meta-analyses. She also taught four introductory epidemiology and biostatistics courses at McGill.

Currently Brooke is a FRQS Postdoctoral Research Fellow at the Centre for Prognosis Research at Keele University in the UK, working with Professor Richard Riley, the world’s foremost expert in IPD meta-analysis. Her fellowship focuses on developing and applying statistical methods to overcome missing data in IPD meta-analysis. Brooke is also involved in other projects related to IPD meta-analysis, prediction, and prognosis at Keele University, and she continues to collaborate with the DEPRESSD Project team in Montreal.

Awards:

ACADEMIC RECOGNITIONS AND AWARDS

- Trainee Paper of the Year. Lady Davis Institute for Medical Research, 2019. ($500)

- American Psychological Association Emerging Leaders in Assessment Award, 2015. ($250)

- Best Oral Presentation – PhD Category. McGill Epidemiology, Biostatistics and Occupational Health 11th Annual Student Research Day, 2015. ($100)

- McGill University Graduate Excellence Award In Epidemiology and Biostatistics, 2014. ($3,927)

- American Association of Rheumatology Health Professionals (ARHP) Graduate Student Recognition Award, 2012. ($500)

- Distinction (BSc Neuroscience). McGill University. February 2012.

- Dean’s Multidisciplinary Undergraduate Research List. McGill University. February 2012.

- Principal’s Student-Athlete Academic Honour Roll. McGill University 2009-2010.

 

TRAVEL AWARDS

- McGill University Graduate Research Enhancement and Travel (GREAT) Award, September 2018. ($500 to attend the 2018 Cochrane Colloquium in Edinburgh, Scotland)

- Canadian Institutes of Health Research (CIHR) Travel Award, April 2018. ($1,500 to attend the 2018 Methods for Evaluating Medical Tests and Biomarkers (MEMTAB) Symposium in Utrecht, the Netherlands)

- McGill University Graduate Mobility Award, March 2018. ($3,050 to attend the Statistical Methods for Risk Prediction and Prognostic Models training course in Keele, UK)

- McGill University Graduate Research Enhancement and Travel (GREAT) Award, September 2017. ($1,000 to attend the Global Evidence Summit in Cape Town, South Africa)

- Canadian Institutes of Health Research (CIHR) Travel Award, April 2017. ($1,500 to attend the Society for Epidemiologic Research Meeting in Seattle, Washington, USA)

- McGill University Graduate Mobility Award, December 2016. ($2,010 to attend the Statistical Methods for Evidence Synthesis of Individual Participant Data training course in Keele, UK)

- Canadian Institutes of Health Research (CIHR) Travel Award, March 2016. ($1,500 to attend the Epidemiology Congress of the Americas in Miami, Florida, USA)

- Lady Davis Institute Student Travel Award, August 2015. ($1,000 to attend the 2015 Preventing Overdiagnosis conference in Bethesda, Maryland, USA)

- McGill University Graduate Research Enhancement and Travel (GREAT) Award, June 2015. ($975 to attend the Society for Epidemiologic Research (SER) Annual Meeting in Denver, Colorado, USA)

- André Lussier Travelling Fellowship, May 2015. ($125 to attend the Laurentian Conference of Rheumatology, held in Mont-Tremblant, Quebec)

- McGill University Graduate Research Enhancement and Travel (GREAT) Award, September 2013. ($750 to attend the Cochrane Colloquium in Quebec City, Quebec)

- André Lussier Travelling Fellowship, May 2014. ($125 to attend the Laurentian Conference of Rheumatology, held in Mont-Tremblant, Quebec)

- Canadian Institutes of Health Research (CIHR) Travel Award, November 2011. ($1,000 to attend the American College of Rheumatology/Association for Rheumatology Health Professionals Annual Scientific Meeting in Chicago, Illinois, USA)

- André Lussier Travelling Fellowship, May 2011. ($100 to attend the Laurentian Conference of Rheumatology, held in Mont-Tremblant, Quebec)

 

RESEARCH FUNDING (INCLUDING TRAINING AWARDS)

 

Canadian Institutes of Health Research (CIHR) Project Grants:

- Project Grant, Canadian Institutes of Health Research (CIHR). Diagnostic accuracy of the Patient Health Questionnaire-9 for detecting major depression: an updated systematic review and independent participant data meta-analysis. (2019-2021, $210,375). Role: Co-Applicant

- Project Scheme Grant, Canadian Institutes of Health Research (CIHR). Improving depression screening in geriatric patients by reducing bias and generating individualized accuracy estimates: an individual patient data meta-analysis of the Geriatric Depression Scale (GDS). (2018-2020, $120,000). Role: Co-Applicant

- Personalized Health Catalyst Grant, Canadian Institutes of Health Research (CIHR). Using individual patient data meta-analyses to develop individual prediction models for depression screening. (2018-2020, $200,000). Role: Co-Applicant

Postdoctoral Funding:
- Postdoctoral Training Award, Fonds de Recherche Québec – Santé (FRQS). (2019-2021, $55,000 per year)

Doctoral Funding:

- Doctoral Award, Canadian Institutes of Health Research (CIHR). Frederick Banting and Charles Best Canada Graduate Scholarship. (2016-2019, $35,000 per year)

- Doctoral Training Award, Fonds de la recherche en santé Québec (FRSQ). (2014-2017, $20,000 per Year; 3rd year declined)

 

Master’s Funding:

- Master’s Award, Canadian Institutes of Health Research (CIHR). Frederick Banting and Charles Best Canada Graduate Scholarship. (2013-2014, $17,500 per year)

- Master’s Training Award, Fonds de la recherche en santé Québec (FRSQ). (2012-2014, $15,000 per year; 2nd year declined)

 

 Funded Undergraduate Research Internships: 

- Canadian Institutes of Health Research, Institute of Musculoskeletal Health and Arthritis, Summer Studentship in Musculoskeletal Health and Arthritis, 2011. ($4,950)

- Canadian Scleroderma Research Group Summer Studentship, 2011 (declined; Canadian Institutes of Health Research, Strategic Training Initiative in Health Research grant, PI: M Baron). ($3,939)

- Canadian Institutes of Health Research, Institute of Musculoskeletal Health and Arthritis, Summer Studentship in Musculoskeletal Health and Arthritis, 2010. ($4,950)

- Canadian Scleroderma Research Group Summer Studentship, 2010 (declined; Canadian Institutes of Health Research, Strategic Training Initiative in Health Research grant, PI: M Baron). ($3,939)

Courses taught:

Course Coordinator and Instructor for Graduate-level course Biostatistics for Health Sciences (2018). Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada. 39 class hours. Sole lecturer (no co-lecturers or teaching assistants). Class size: 30.
 

Guest Lecturer for Graduate-level course Knowledge Synthesis (2018). Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada. 1.5 hour lecture on Individual Patient Data Meta-Analyses. Class size: 9.

 

Course Coordinator and Instructor for Graduate-level course Fundamentals of Epidemiology (2017). Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada. 52 class hours. Sole lecturer (no co-lecturers or teaching assistants). Class size: 14.


Course Coordinator and Instructor for Graduate-level course Clinical Epidemiology (2017). Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada. 39 class hours. 1 of 4 co-lecturers (no teaching assistants). Class size: 22.
 

Course Coordinator and Instructor for Graduate-level course Fundamentals of Epidemiology (2016). Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada. 52 class hours. 1 of 2 co-lecturers (no teaching assistants). Class size: 22.
 

Guest Lecturer for Graduate-level course Knowledge Synthesis (2016). Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Quebec, Canada. 1.5 hour lecture on Individual Patient Data Meta-Analyses. Class size: 8.
 

Guest Lecturer for Graduate-level course Applied Statistics for Nursing (2015). School of Nursing, McGill University, Montreal, Quebec, Canada. 1.5 hour lecture on Logistic Regression. Class size: 39.

Publications:

Levis B, McMillan D, Sun Y, He C, Rice DB, Krishnan A, et al. Comparison of major depression diagnostic classification probability using the SCID, CIDI and MINI diagnostic interviews among women in pregnancy of postpartum: An individual participant data meta-analysis. IJMPR. In press.

 

He C, Levis B, Riehm KE, Saadat N, Levis AW, Azar M, et al. The accuracy of the Patient Health Questionnaire-9 algorithm for screening to detect major depression: An individual participant data meta-analysis. Psychotherapy and Psychosomatics. In press.

 

Wu Y, Levis B, Riehm KE, Saadat N, Levis AW, Azar M, et al. Equivalency of the diagnostic accuracy of the PHQ-8 and PHQ-9: a systematic review and individual participant data meta-analysis. Psychol Med. Epub ahead of print.

 

Cañedo-Ayala M, Rice DB, Levis B, Carrier, ME, Cumin J, Malcarne V, Hagedoorn M, Thombs BD, & The Caregiver Advisory Committee. Caregiver, care recipient, and caregiving factors associated with symptoms of depression among informal caregivers of people living with systemic sclerosis. Disability and Rehabilitation. Epub ahead of print.

 

Azar M, Riehm KE, Saadat N, Sanchez T, Chiovitti M, Qi L, Rice DB, Levis B, Fedoruk C, Levis AW, Kloda LA, Kimmelman J, Benedetti A, Thombs BD. Evaluation of journal registration policies and prospective registration of randomized clinical trials of non-regulated healthcare interventions. JAMA Internal Medicine. 2019;179(5):624-632.

 

Levis B, Benedetti A, Thombs BD and the DEPRESsion Screening Data (DEPRESSD) Collaboration. Accuracy of Patient Health Questionnaire-9 (PHQ-9) for screening to detect major depression: individual participant data meta-analysis. BMJ. 2019;365:I1476.

 

Levis B, Yan XW, He C, Sun Y, Benedetti A, Thombs BD. A comparison of depression prevalence estimates in meta-analyses based on screening tools and rating scales versus diagnostic interviews: a meta-research review. BMC Medicine. 2019;17:65.

 

Salameh J-P, McInnes M, Moher D, Thombs BD, McGrath T, Frank R, Sharifabadi AD, Krajipool N, Levis B, Bossuyt P. Completeness of reporting of systematic reviews of diagnostic test accuracy based on the PRISMA-DTA reporting guideline. Clinical Chemistry. 2019;65(2):291-301.

 

Ishihara M, Harel D, Levis B, Levis AW, Riehm KE, Saadat N, et al. Shortening self-report mental health symptom measures through optimal test assembly methods: Development and validation of the Patient Health Questionnaire-Depression-4. Depression and Anxiety. 2019;36(1):82-92.

 

Benedetti A, Wu Y, Levis B, Wilchesky M, Boruff J, Ioannidis JPA, et al. Diagnostic accuracy of the Geriatric Depression Scale-30, Geriatric Depression Scale-15, Geriatric Depression Scale-5, and Geriatric Depression Scale-4 for detecting major depression: Protocol for a systematic review and individual participant data meta-analysis. BMJ Open. 2018;8(12):e026598.

 

Levis B, Benedetti A, Riehm KE, Saadat N, Levis AW, Azar M, et al. Probability of major depression diagnostic classification using semi-structured versus fully structured diagnostic interviews. British Journal of Psychiatry. 2018;212:377-385.

 

Simoneau G, Levis B, Cuijpers P, Ioannidis JPA, Patten SB, Shrier I, Bombardier CH, de Lima Osório F, Fann JR, Gjerdingen D, Lamers F, Lotrakul M, Löwe B, Shaaban J, Stafford L, van Weert HCPM, Whooley MA, Wittkampf KA, Yeung AS, Thombs BD, Benedetti A. A comparison of bivariate, multivariate random-effects, and Poisson correlated gamma-frailty models to meta-analyze individual patient data of ordinal scale diagnostic tests. Biometrical Journal. 2017;59:1317-1338.

 

Levis B, Benedetti A, Levis AW, Ioannidis JPA, Shrier I, Cuijpers P, Gilbody S, Kloda LA, McMillan D, Patten SB, Steele RJ, Ziegelstein RC, Bombardier CH, de Lima Osório F, Fann JR, Gjerdingen D, Lamers F, Lotrakul M, Loureiro SR, Löwe B, Shaaban J, Stafford L, van Weert HCPM, Whooley MA, Williams LS, Wittkampf KA, Yeung AS, Thombs BD. Selective cutoff reporting in studies of diagnostic test accuracy: A comparison of traditional and individual patient data meta-analyses of the Patient Health Questionnaire-9 depression screening tool. American Journal of Epidemiology. 2017;185(10):954-964.

 

Levis B, Kwakkenbos L, Hudson M, Baron M, Thombs BD, Canadian Scleroderma Research Group. The association of sociodemographic and objectively-assessed disease variables with fatigue in systemic sclerosis: an analysis of 785 Canadian Scleroderma Research Group Registry patients. Clinical Rheumatology. 2017;36:373-379.

 

Coroiu A, Kwakkenbos L, Levis B, Hudson M, Baron M, Cella D, Thombs BD, Canadian Scleroderma Research Group. The comparability of Functional Assessment of Chronic Illness Therapy-Fatigue scores between cancer and systemic sclerosis. The Journal of Scleroderma and Related Disorders. 2017;2:57-63.

 

Rice DB, Kloda LA, Levis B, Qi B, Kingsland E, Thombs BD. Are MEDLINE searches sufficient for systematic reviews and meta-analyses of the diagnostic accuracy of depression screening tools? A review of meta-analyses. Journal of Psychosomatic Research. 2016;87:7-13.

 

Levis B, Rice DB, Kwakkenbos L, Steele R, Hagedoorn M, Hudson M, Baron M, Thombs BD,Canadian Scleroderma Research Group. Using marital status and continuous marital satisfaction ratings to predict depressive symptoms in married and unmarried women with systemic sclerosis.Arthritis Care & Research. 2016;68(8):1143-1149.

 

Thombs BD, Benedetti A, Kloda LA, Levis B, Azar M, Riehm KE, Saadat N, Cuijpers P, Gilbody S, Ioannidis JP, McMillan D, Patten SB, Shrier I, Steele RJ,  Ziegelstein RC, Loiselle CG, Henry M, Ismail Z, Mitchell N, Tonelli M. Diagnostic accuracy of the Depression subscale of the Hospital Anxiety and Depression Scale (HADS-D) for detecting major depression: protocol for a systematic review and individual patient data meta-analyses. BMJ Open. 2016 Apr 13;6:e011913.

 

Thombs BD, Benedetti A, Kloda LA, Levis B, Riehm KE, Azar M, Cuijpers P, Gilbody S, Ioannidis JPA, McMillan D, Patten SB, Shrier I, Steele RJ, Ziegelstein RC, Tonelli M, Mitchell N, Comeau L, Schinazi J, Vigod S. Diagnostic accuracy of the Edinburgh Postnatal Depression Scale (EPDS) for detecting major depression in pregnant and postnatal women: protocol for a systematic review and individual patient data meta-analyses. BMJ Open. 2015 Oct;5:e009742.

 

Kwakkenbos L, Delisle VC, Fox RS, Gholizadeh S, Jewett LR, Levis B, Milette K, Mills SD, Malcarne VL, Thombs BD. Psychosocial aspects of scleroderma. Rheum Dis Clin North Am. 2015 Aug;41(3):519-28.

 

Thombs BD, Benedetti A, Kloda LA, Levis B, Nicolau I, Cuijpers P, Gilbody S, Ioannidis JP, McMillan D, Patten SB, Shrier I, Steele RJ, Ziegelstein RC. The diagnostic accuracy of the Patient Health Questionnaire-2 (PHQ-2), Patient Health Questionnaire-8 (PHQ-8), and Patient Health Questionnaire-9 (PHQ-9) for detecting major depression: protocol for a systematic review and individual patient data meta-analyses. Systematic Reviews. 2014 Oct;3:124.

 

Thombs BD, Arthurs E, Coronado-Montoya S, Roseman M, Delisle VC, Leavens A, Levis B, Azoulay L, Smith C, Ciofani L, Coyne JC, Feeley N, Gilbody S, Schinazi J, Stewart DE, Zelkowitz P. Depression screening and patient outcomes in pregnancy and postpartum: A systematic review. Journal of Psychosomatic Research. 2014 Jun;76(6):433-46.

 

Razykov I, Levis B, Hudson M, Baron M, Thombs BD, Canadian Scleroderma Research Group. Prevalence and clinical correlates of pruritus in patients with systemic sclerosis: An updated analysis of 959 Patients. Rheumatology. 2013 Nov;52(11):2056-61.

 

Kwakkenbos L, Jewett LR, Baron M, Bartlett SJ, Furst D, Gottesman K, Khanna D, Malcarne VL, Mayes MD, Mouthon L, Poiraudeau S, Sauve M, Nielson WR, Poole JL, Assassi S, Boutron I, Ells C, van den Ende CHM, Hudson M, Impens A, Körner A, Leite C, Costa Maia A, Mendelson C, Pope J, Steele RJ, Suarez-Almazor ME, Ahmed S, Coronado-Montoya S, Delisle VC, Gholizadeh S, Jang Y, Levis B, Milette K, Mills SD, Razykov I, Sobel RM, Thombs BD. The Scleroderma Patient-centered Intervention Network (SPIN) Cohort: Protocol for a cohort multiple randomized controlled trial (cmRCT) design to support trials of psychosocial and rehabilitation interventions in a rare disease context. BMJ Open. 2013;3:e003563.

 

Meijer A, Roseman M, Delisle V, Milette K, Levis B, Syamchandra A, Stefanek M, Stewart D, de Jonge P, Coyne J, Thombs B. Effects of screening for psychological distress on patient outcomes in cancer: a systematic review. Journal of Psychosomatic Research. 2013 Jul;75(1):1-17. 

 

Thombs B, Roseman M, Coyne J, de Jonge P, Delisle V, Arthurs E, Levis B, Ziegelstein R. Does evidence support the American Heart Association’s recommendation to screen patients for depression in cardiovascular care? An updated systematic review. PLOS ONE. 2013;8(1):e52654.

 

Levis B, Burri A, Hudson M, Baron M, Thombs BD, Canadian Scleroderma Research Group. Sexual activity and impairment in women with systemic sclerosis compared to women from a general population sample. PLOS ONE. 2012;7(12):e52129.

 

Levis B, Hudson M, Knafo R, Baron M, Nielson WR, Hill M, Thombs BD, Canadian Scleroderma Research Group. Sexual activity and impairment among women with systemic sclerosis. Arthritis Care & Research. 2012;64(3):340-50.

Oral Presentations:

Levis B. From 0 to 18,158: A journey in individual participant data meta-analysis. Early Career Biostatisticians’ (ECB) Day of the 2019 International Society for Clinical Biostatistics (ISCB). Leuven, Belgium. July 2019.

 

Levis B, Benedetti A, Rücker G, Jones HE, Thombs BD, and the DEPRESSD Collaboration. An empirical comparison of methods for meta-analysis of diagnostic accuracy when studies selectively reporting cutoffs. 40th Annual Conference of the International Society for Clinical Biostatistics. Leuven, Belgium. July 2019.

 

Wu Y, Levis B, Thombs BD, Benedetti A, and the DEPRESsion Screening Data (DEPRESSD) Collaboration. Evaluation of the equivalency of the PHQ-8 and PHQ-9: A systematic review and individual participant data meta-analysis. McGill Epidemiology, Biostatistics and Occupational Health 12th Annual Student Research Day. Montreal, Quebec, Canada. March 2019.

Levis B, Rücker G, Jones HE, Thombs BD, Benedetti A, and the DEPRESSD Research Group. Estimating diagnostic accuracy when primary studies selectively report cutoffs: Individual participant data meta-analysis versus three methods for analyzing published data. 2018 Cochrane Colloquium. Edinburgh, Scotland. September 2018.

Levis B, Yan XW, He C, Benedetti A, Thombs BD. Overestimation of depression prevalence in meta-analyses via the inclusion of primary studies that assessed depression usingscreening tools or rating scales rather than validated diagnostic interviews. Preventing Overdiagnosis 2018. Copenhagen, Denmark. August 2018.

Levis B, Rücker G, Jones HE, Thombs BD, Benedetti A, and the DEPRESSD Research Group. Estimating diagnostic accuracy when primary studies selectively report cutoffs: Individual participant data meta-analysis versus three methods for analyzing published data. Methods for Evaluating Medical Tests and Biomarkers (MEMTAB) Conference. Utrecht, Netherlands. July 2018.

Levis B, Benedetti A, Riehm KE, Saadat N, Levis AW, Azar M, Rice DB, Chiovitti M, Sanchez TA, Thombs BD, and the DEPRESSD Research Group. Diagnostic accuracy of the PHQ-9 depression screening tool compared to semi-structured versus fully structured diagnostic interviews for major depression: An individual participant data meta-analysis comparing reference standards. Ninth Annual Lady Davis Institute for Medical Research Scientific Retreat. Montreal, Quebec, Canada. May 2018.

Levis B, Benedetti A, Riehm KE, Saadat N, Levis AW, Azar M, Rice DB, Chiovitti M, Sanchez TA, Thombs BD, and the DEPRESSD Research Group. Diagnostic accuracy of the PHQ-9 depression screening tool compared to semi-structured versus fully structured diagnostic interview reference standards: An individual participant data meta-analysis. McGill Epidemiology, Biostatistics and Occupational Health 11th Annual Student Research Day. Montreal, Quebec, Canada. March 2018.

Harel D, Ishihara M, Levis B, Thombs BD. Optimal methods for shortening patient-reported outcome measures. International Conference on Health Policy Statistics, Charleston, SC, USA. January 2018.

Levis B, Benedetti A, Riehm KE, Saadat N, Levis AW, Azar M, Rice DB, Chiovitti M, Thombs BD, and the DEPRESSD Research Group. Overdiagnosis of major depression based on lay-administered fully structured diagnostic interviews. Preventing Overdiagnosis 2017. Quebec City, Quebec, Canada. August 2017.

Azar M, Benedetti A, Shrier I, Chiovitti M, Sanchez T, Levis B, Thombs BD. Trial and meta-analysis characteristics associated with data contribution in individual patient data meta-analyses of randomized controlled trials. Preventing Overdiagnosis 2017. Quebec City, Quebec, Canada. August 2017.  

Levis B, Benedetti A, Riehm KE, Saadat N, Levis AW, Azar M, Rice DB, Chiovitti M, Thombs BD, and the DEPRESSD Research Group. Underestimation of depression screening tool sensitivity when using lay-administered fully structured diagnostic interviews as the reference standard: an individual patient data meta-analysis. Cochrane Canada Symposium. Hamilton, Ontario, Canada. May 2017.

Fletcher A, Rutman A, Levis B, Shemie S, Chen BY. McGill medical student knowledge and attitude towards organ donation across all four years of undergraduate medical education. The Canadian Conference on Medical Education, Winnipeg, Manitoba, Canada. May 2017.

Levis B, Benedetti A, Riehm KE, Saadat N, Levis AW, Azar M, Rice DB, Chiovitti M, Thombs BD, and the DEPRESSD Research Group. Diagnostic interviews for major depression: A comparison of diagnoses made using semi-structured vs. fully structured clinical interviews. McGill Epidemiology, Biostatistics and Occupational Health 11th Annual Student Research Day. Montreal, Quebec, Canada. April 2017.

Azar M, Riehm KE, Saadat N, Fedoruk C, Kimmelman J, Levis B, Levis AW, Rice DB, Kloda LA, Thombs BD. Transparency of outcome reporting and trial registration of randomized controlled trials of non-regulated health interventions. Preventing Overdiagnosis 2016, Barcelona, Spain. September 2016.

Levis B, Benedetti A, Thombs BD. Selective cutoff reporting in diagnostic test accuracy studies of depression screening tools: Comparing traditional meta-analysis to individual patient data meta-analysis. 2015 Cochrane Colloquium. Vienna, Austria. October 2015.

Levis B, Benedetti A, Thombs BD. Selective cutoff reporting in studies of diagnostic test accuracy of depression screening tools: Comparing traditional meta-analysis to individual patient data meta-analysis. Preventing Overdiagnosis 2015. Bethesda, Maryland, USA. September 2015.

Levis B, Benedetti A, Levis AW, Thombs BD. Selective reporting in studies of diagnostic test accuracy: Comparing traditional meta-analysis to individual patient data meta-analysis to assess the diagnostic accuracy of the Patient Health Questionnaire-9. In symposium (BD Thombs, Chair), Improving evidence-based psychological services by identifying and reducing reporting biases. 76th Canadian Psychological Association Annual Convention. Ottawa, Ontario, Canada. June 2015.

Simoneau G, Levis B, Thombs BD, Benedetti A. An empirical comparison of methods to meta-analyze individual patient data of diagnostic accuracy. Statistical Society of Canada (SSC) Student Annual Conference. Halifax, Nova Scotia, Canada. June 2015.

Levis B. Selective cutoff reporting in studies of diagnostic accuracy of depression screening tools: Comparing traditional meta-analysis to individual patient data meta-analysis. McGill Epidemiology, Biostatistics and Occupational Health 11th Annual Student Research Day. Montreal, Quebec, Canada. April 2015.

Levis B, Thombs BD. Individual Patient Data (IPD) meta-analysis to overcome shortcomings in traditional meta-analysis of screening test accuracy. 74th Canadian Psychological Association Annual Convention. Quebec City, Quebec, Canada. June 2013.

Levis B, Hudson M, Knafo R, Baron M, Nielson W, Hill M, Thombs BD. Frequency and impact of symptoms experienced by patients with systemic sclerosis: Sexual activity and impairment among women with systemic sclerosis. American College of Rheumatology/Association for Rheumatology Health Professionals Annual Scientific Meeting. Chicago, Illinois, USA. November 2011.

Levis B, Hudson M, Knafo R, Baron M, Thombs BD, Nielson WR, Hill M, Canadian Scleroderma Research Group. Sexual functioning among women with scleroderma. 5th Canadian Scleroderma Research Group Annual Meeting. Quebec City, Quebec, Canada. October 2011.

Levis B, Knafo R, El-Baalbaki, G, Hudson, M, Baron M, Thombs BD, Canadian Scleroderma Research Group. Prevalence and clinical correlates of female sexual dysfunction in scleroderma: Preliminary Results. 4th Canadian Scleroderma Research Group Annual Meeting. Halifax, Nova Scotia, Canada. November 2010.