Brett D. Thombs

Also affiliated with McGill University Health Centre, Jewish General Hospital, McGill University

MedicinePsychologyDecision Sciences

Pilot corpus only

This score is computed over theSindex pilot corpus and does not cover the full scientific literature. Scores are relative to papers we have ingested — papers, authors, and institutions outside the pilot are not represented. Methodology.

Top 5%percentile

0.419Author DataRank

Indexed papers

1in pilot corpus

datarank_citation_only_1hop_v6· scope data_onlyMethodology

Why this DataRank?

An author's DataRank is the sum of the DataRanks of all 1 indexed paper attributed to them. A prolific author with many moderate-impact papers can outrank one with a single high-impact paper.

Author scores recompute whenever paper DataRanks are refreshed, so this number lags the underlying paper scores by at most one batch run.

Read the full methodology →

The highest-impact dataset this researcher has shared, ranked by DataRank — the single contribution doing the most to lift their data-sharing standing.

Individual patient data meta-analysis estimates the minimal detectable change of the Geriatric Depression Scale-15

Journal of Clinical Epidemiology(2024)10.1016/j.jclinepi.2024.111443

Top 44%

0.419DataRank

Top 44%8 citations

Yin Wu, Suiqiong Fan, Brooke Levis, Ying Sun, Simon Gilbody +49 more

Papers

Driven by 40 papers — median percentile 56. Top paper: “The Accuracy of the Patient Health Questionnaire-9 Algorithm for Screening to Detect Major Depression: An Individual Participant Data Meta-Analysis”.

The Accuracy of the Patient Health Questionnaire-9 Algorithm for Screening to Detect Major Depression: An Individual Participant Data Meta-Analysis

Psychotherapy and Psychosomatics(2019)10.1159/000502294

N/A

4.8DataRank · unranked

123 citations

Brooke Levis, Kira E. Riehm, Nazanin Saadat, Alexander W. Levis, Marleine Azar +74 more

There are no randomized controlled trials that support the United States Preventive Services Task Force guideline on screening for depression in primary care: a systematic review

BMC Medicine(2014)10.1186/1741-7015-12-13

N/A

4.2DataRank · unranked

100 citations

Roy C. Ziegelstein, Michelle Roseman, Lorie A. Kloda, John P. A. Ioannidis, Brett D. Thombs

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)10.1186/2046-4053-3-124

N/A

3.6DataRank · unranked

124 citations

Andrea Benedetti, Lorie A. Kloda, Brooke Levis, Ioana Nicolau, Pim Cuijpers +9 more

Depression prevalence based on the Edinburgh Postnatal Depression Scale compared to Structured Clinical Interview for DSM DIsorders classification: Systematic review and individual participant data meta‐analysis

International Journal of Methods in Psychiatric Research(2020)10.1002/mpr.1860

N/A

2.4DataRank · unranked

60 citations

Tiffany Dal Santo, Brooke Levis, Yin Wu, Ying Sun, Chen He +75 more

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)10.1136/bmjopen-2015-009742

N/A

2.3DataRank · unranked

57 citations

Andrea Benedetti, Lorie A. Kloda, Brooke Levis, Kira E. Riehm, Marleine Azar +15 more

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)10.1136/bmjopen-2018-026598

N/A

2.0DataRank · unranked

53 citations

Yin Wu, Brooke Levis, Machelle Wilchesky, Jill Boruff, John P. A. Ioannidis +10 more

Probability of major depression diagnostic classification using semi-structured versus fully structured diagnostic interviews

The British Journal of Psychiatry(2018)10.1192/bjp.2018.54

N/A

1.7DataRank · unranked

69 citations

Andrea Benedetti, Kira E. Riehm, Nazanin Saadat, Alexander W. Levis, Marleine Azar +75 more

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)10.1136/bmjopen-2016-011913

N/A

1.6DataRank · unranked

30 citations

Andrea Benedetti, Lorie A. Kloda, Brooke Levis, Marleine Azar, Kira E. Riehm +17 more

Comparison of major depression diagnostic classification probability using the SCID, CIDI, and MINI diagnostic interviews among women in pregnancy or postpartum: An individual participant data meta‐analysis

International Journal of Methods in Psychiatric Research(2019)10.1002/mpr.1803

N/A

1.3DataRank · unranked

49 citations

Dean McMillan, Ying Sun, Chen He, Danielle B. Rice, Ankur Krishnan +93 more

Depression prevalence using the HADS-D compared to SCID major depression classification: An individual participant data meta-analysis

Journal of Psychosomatic Research(2020)10.1016/j.jpsychores.2020.110256

N/A

1.2DataRank · unranked

41 citations

Tiffany Dal Santo, Brooke Levis, Yin Wu, Ying Sun, Ankur Krishnan +73 more

Probability of major depression diagnostic classification based on the SCID, CIDI and MINI diagnostic interviews controlling for Hospital Anxiety and Depression Scale – Depression subscale scores: An individual participant data meta-analysis of 73 primary studies

Journal of Psychosomatic Research(2020)10.1016/j.jpsychores.2019.109892

N/A

1.2DataRank · unranked

49 citations

Brooke Levis, Ying Sun, Ankur Krishnan, Chen He, Kira E. Riehm +114 more

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(2018)10.1002/da.22841

N/A

1.1DataRank · unranked

26 citations

Daphna Harel, Brooke Levis, Alexander W. Levis, Kira E. Riehm, Nazanin Saadat +35 more

Equivalency of the diagnostic accuracy of the PHQ-8 and PHQ-9: a systematic review and individual participant data meta-analysis

Psychological Medicine(2019)10.1017/s0033291719001314

N/A

0.901DataRank · unranked

405 citations

Brooke Levis, Kira E. Riehm, Nazanin Saadat, Alexander W. Levis, Marleine Azar +67 more

Data-driven methods distort optimal cutoffs and accuracy estimates of depression screening tools: a simulation study using individual participant data

Journal of Clinical Epidemiology(2021)10.1016/j.jclinepi.2021.03.031

N/A

0.889DataRank · unranked

20 citations

Brooke Levis, Tiffany Dal Santo, Scott B. Patten, Ian Shrier, Brett D. Thombs +101 more

Rethinking recommendations for screening for depression in primary care

Canadian Medical Association Journal(2011)10.1503/cmaj.111035

N/A

0.813DataRank · unranked

225 citations

James C. Coyne, Pim Cuijpers, Peter de Jonge, Simon Gilbody, John P. A. Ioannidis +5 more

Patient Health Questionnaire-9 scores do not accurately estimate depression prevalence: individual participant data meta-analysis

Journal of Clinical Epidemiology(2020)10.1016/j.jclinepi.2020.02.002

N/A

0.798DataRank · unranked

204 citations

Andrea Benedetti, Ying Sun, Zelalem Negeri, Chen He, Yin Wu +76 more

Data-Driven Cutoff Selection for the Patient Health Questionnaire-9 Depression Screening Tool

JAMA Network Open(2024)10.1001/jamanetworkopen.2024.29630

N/A

0.663DataRank · unranked

22 citations

Parash Mani Bhandari, Tiffany Dal Santo, Suiqiong Fan, Ying Sun, Chen He +125 more

Equivalency of the diagnostic accuracy of the PHQ-8 and PHQ-9: a systematic review and individual participant data meta-analysis – ERRATUM

Psychological Medicine(2019)10.1017/s0033291719002137

N/A

0.449DataRank · unranked

19 citations

Brooke Levis, Kira E. Riehm, Nazanin Saadat, Alexander W. Levis, Marleine Azar +65 more

Individual participant data meta-analysis to compare EPDS accuracy to detect major depression with and without the self-harm item

Scientific Reports(2023)10.1038/s41598-023-29114-w

N/A

0.425DataRank · unranked

16 citations

Yin Wu, Ying Sun, Brooke Levis, Jizhou Tian, Pim Cuijpers +83 more

Individual patient data meta-analysis estimates the minimal detectable change of the Geriatric Depression Scale-15

Journal of Clinical Epidemiology(2024)10.1016/j.jclinepi.2024.111443

Top 44%

0.419DataRank

Top 44%8 citations

Yin Wu, Suiqiong Fan, Brooke Levis, Ying Sun, Simon Gilbody +49 more

Depression prevalence of the Geriatric Depression Scale-15 was compared to Structured Clinical Interview for DSM using individual participant data meta-analysis

Scientific Reports(2024)10.1038/s41598-024-68496-3

N/A

0.416DataRank · unranked

15 citations

Lu Qiu, Brooke Levis, Suiqiong Fan, Ying Sun, Lara S. N. Amiri +44 more

An empirical comparison of three methods for multiple cutoff diagnostic test meta‐analysis of the Patient Health Questionnaire‐9 (PHQ‐9) depression screening tool using published data vs individual level data

Research Synthesis Methods(2020)10.1002/jrsm.1443

N/A

0.406DataRank · unranked

14 citations

Brooke Levis, Gerta Rücker, Hayley E. Jones, Martin Schumacher, John P. A. Ioannidis +3 more

Overestimation of Postpartum Depression Prevalence Based on a 5-item Version of the EPDS: Systematic Review and Individual Participant Data Meta-analysis

The Canadian Journal of Psychiatry(2020)10.1177/0706743720934959

N/A

0.396DataRank · unranked

13 citations

Brooke Levis, Anita Lyubenova, Tiffany Dal Santo, Zelalem Negeri, Yin Wu +50 more

Comparison of different scoring methods based on latent variable models of the PHQ-9: an individual participant data meta-analysis

Psychological Medicine(2021)10.1017/s0033291721000131

N/A

0.385DataRank · unranked

12 citations

Brooke Levis, Carl F. Falk, Ying Sun, John P. A. Ioannidis, Pim Cuijpers +5 more

Comparison of the accuracy of the 7-item HADS Depression subscale and 14-item total HADS for screening for major depression: A systematic review and individual participant data meta-analysis.

Psychological Assessment(2023)10.1037/pas0001181

N/A

0.345DataRank · unranked

9 citations

Brooke Levis, Federico M. Daray, John P. A. Ioannidis, Scott B. Patten, Pim Cuijpers +110 more

Comparison of Patient Health Questionnaire-9, Edinburgh Postnatal Depression Scale and Hospital Anxiety and Depression – Depression subscale scores by administration mode: An individual participant data differential item functioning meta-analysis

Journal of Affective Disorders(2024)10.1016/j.jad.2024.06.033

N/A

0.292DataRank · unranked

6 citations

Yin Wu, Brooke Levis, Suiqiong Fan, Ying Sun, Mingyao Xu +255 more

External validation of a shortened screening tool using individual participant data meta-analysis: A case study of the Patient Health Questionnaire-Dep-4

Methods(2022)10.1016/j.ymeth.2021.11.005

N/A

0.269DataRank · unranked

5 citations

Brooke Levis, Ying Sun, Felix H. Fischer, Pim Cuijpers, Scott B. Patten +116 more

An empirical comparison of statistical methods for multiple cut-off diagnostic test accuracy meta-analysis of the Edinburgh postnatal depression scale (EPDS) depression screening tool using published results vs individual participant data

BMC Medical Research Methodology(2024)10.1186/s12874-023-02134-w

N/A

0.208DataRank · unranked

3 citations

Brooke Levis, John P. A. Ioannidis, Brett D. Thombs, Andrea Benedetti, Ying Sun +54 more

Re-rethinking the article by Thombs and colleagues: Figure 1:

Canadian Medical Association Journal(2012)10.1503/cmaj.112-2024

N/A

0.165DataRank · unranked

2 citations

James C. Coyne, Pim Cuijpers, Peter de Jonge, Simon Gilbody, Blair T. Johnson +5 more

A case study of an individual participant data meta-analysis of diagnostic accuracy showed that prediction regions represented heterogeneity well

Scientific Reports(2023)10.1038/s41598-023-36129-w

N/A

0.104DataRank · unranked

1 citations

Parash Mani Bhandari, Yin Wu, Brooke Levis, Andrea Benedetti, Ying Sun +77 more

Protocol for the Development of a Tool to Map Systemic Sclerosis Pain Sources, Patterns, and Management Experiences: A Scleroderma Patient-Centered Intervention Network Patient-Researcher Partnership

Research Square(2024)10.21203/rs.3.rs-4219714/v1

N/A

0DataRank · unranked

0 citations

Meira Golberg, Elsa‐Lynn Nassar, Marie‐Eve Carrier, Sophie Hu, Linda Kwakkenbos +7 more

Protocol for the development of a tool to map systemic sclerosis pain sources, patterns, and management experiences: a Scleroderma Patient-centered Intervention Network patient-researcher partnership

BMC Rheumatology(2024)10.1186/s41927-024-00398-3

N/A

0DataRank · unranked

0 citations

Meira Golberg, Elsa‐Lynn Nassar, Marie‐Eve Carrier, Sophie Hu, Linda Kwakkenbos +13 more

Equivalency of the diagnostic accuracy of the PHQ-8 and PHQ-9: A systematic review and individual participant data meta-analysis

UNC Libraries(2024)10.17615/vqye-qg46

N/A

0DataRank · unranked

0 citations

Brooke Levis, Kira E. Riehm, Navid Saadat, Alexander W. Levis, Marleine Azar +63 more

Shortening self-report mental health symptom measures through optimal test assembly methods: Development and validation of the Patient Health Questionnaire-Depression-4

UNC Libraries(2024)10.17615/shcj-ke76

N/A

0DataRank · unranked

0 citations

Pim Cuijpers, Yeates Conwell, Brett D. Thombs, Adam Simning, Peter Butterworth +36 more

Individual participant data meta-analysis to compare EPDS accuracy to detect major depression with and without the self-harm item

Research Square(2022)10.21203/rs.3.rs-1897587/v1

N/A

0DataRank · unranked

0 citations

Yin Wu, Ying Sun, Brooke Levis, Jizhou Tian, Jill Boruff +8 more

Author response for "Shortening the Edinburgh Postnatal Depression Scale using Optimal Test Assembly Methods: Development of the EPDS‐Dep‐5"

(2020)10.1111/acps.13272/v2/response1

N/A

0DataRank · unranked

0 citations

Brooke Levis, Miyabi Ishihara, Alexander W. Levis, Simone N. Vigod, Louise M. Howard +60 more

The Accuracy of the Patient Health Questionnaire-9 Algorithm for Screening to Detect Major Depression: An Individual Participant Data Meta-Analysis

UNC Libraries(2024)10.17615/ejch-5n22

N/A

0DataRank · unranked

0 citations

Brooke Levis, Kira E. Riehm, Navid Saadat, Alexander W. Levis, Marleine Azar +71 more

Probability of major depression diagnostic classification using semi-structured versus fully structured diagnostic interviews

UNC Libraries(2024)10.17615/zrfp-g315

N/A

0DataRank · unranked

0 citations

Andrea Benedetti, Kira E. Riehm, Navid Saadat, Alexander W. Levis, Marleine Azar +71 more

Selective cutoff reporting in studies of the accuracy of the Patient Health Questionnaire‐9 and Edinburgh Postnatal Depression Scale: Comparison of results based on published cutoffs versus all cutoffs using individual participant data meta‐analysis

International Journal of Methods in Psychiatric Research(2021)10.1002/mpr.1873

N/A

0DataRank · unranked

17 citations

Brooke Levis, Parash Mani Bhandari, Brett D. Thombs, Andrea Benedetti, Dipika Neupane

Patterns of patient-reported symptoms and association with sociodemographic and systemic sclerosis disease characteristics: a scleroderma Patient-centered Intervention Network (SPIN) Cohort cross-sectional study

EClinicalMedicine(2023)10.1016/j.eclinm.2023.102104

N/A

0DataRank · unranked

6 citations

Mitchell R. Knisely, Donald E. Bailey, Tamara J. Somers, Linda Kwakkenbos, Marie‐Eve Carrier +95 more

Brett D. Thombs

Indexed papers

Top data-sharing exemplar

Papers