Tammy Clifford, University of Ottawa

Research

Read how they describe their research on their University of Ottawa profile.

Screening Clinical Practice Guideline De-Implementation Ethics Knowledge Translation Policy Population Health Practice

Latest papers

The GIN-McMaster Guideline Development Checklist extension for engagement
Journal of Clinical Epidemiology · 2025
Outlier analysis for accelerating clinical discovery: An augmented intelligence framework and a systematic review.
PLOS digital health · 2024
Barriers in accessing medical cannabis for children with drug-resistant epilepsy in Canada: A qualitative study.
Epilepsy & behavior : E&B · 2020

All 30 publications

Latest funding

Catalyzing registry-based randomized comparative effectiveness trials for inherited metabolic diseases in children: establishing a core outcome set and data collection tools
CIHR · 2016 · Principal investigator
$100,000
Development and implementation of a reporting guideline for systematic reviews and meta-analyses of diagnostic accuracy studies: The PRISMA-DTA initiative
CIHR · 2016 · Co-investigator
$100,000
Evidence and values: what role in health policy to divest from screening?
CIHR · 2016 · Principal investigator
$9,880

All 6 grants and awards

30 publications.

01

The GIN-McMaster Guideline Development Checklist extension for engagement

Petkovic J, Magwood O, Concannon TW, Akl EA, Khabsa J, Lytvyn L, Welch V, Avey MT, Bhaumik S, Gunn A

Journal of Clinical Epidemiology202524 citations

DOI: 10.1016/j.jclinepi.2025.111727

02

Outlier analysis for accelerating clinical discovery: An augmented intelligence framework and a systematic review.

Janoudi G, Uzun Rada M, Fell DB, Ray JG, Foster AM, Giffen R, Clifford T, Walker MC

PLOS digital health2024

DOI: 10.1371/journal.pdig.0000515 PMID: 38776276

03

Barriers in accessing medical cannabis for children with drug-resistant epilepsy in Canada: A qualitative study.

Elliott J, DeJean D, Potter BK, Coyle D, Clifford T, McCoy B, Wells GA

Epilepsy & behavior : E&B2020

DOI: 10.1016/j.yebeh.2020.107120 PMID: 32570201

04

Economic Evaluation of Cannabinoid Oil for Dravet Syndrome: A Cost-Utility Analysis.

Elliott J, McCoy B, Clifford T, Potter BK, Wells GA, Coyle D

PharmacoEconomics2020

DOI: 10.1007/s40273-020-00923-5 PMID: 32406036

05

Neurologists' perspectives on medical cannabis for pediatric drug-resistant epilepsy in Canada: A qualitative interview study.

Elliott J, DeJean D, Potter BK, Coyle D, Clifford T, McCoy B, Wells GA

Seizure2020

DOI: 10.1016/j.seizure.2020.04.002 PMID: 32361185

06

Cannabis-based products for pediatric epilepsy: An updated systematic review.

Elliott J, DeJean D, Clifford T, Coyle D, Potter BK, Skidmore B, Alexander C, Repetski AE, Shukla V, McCoy B, Wells GA

Seizure2020

DOI: 10.1016/j.seizure.2019.12.006 PMID: 31865133

07

Cost-effectiveness of cannabinoids for pediatric drug-resistant epilepsy: protocol for a systematic review of economic evaluations.

Elliott J, McCoy B, Clifford T, Potter BK, Skidmore B, Wells GA, Coyle D

Systematic reviews2019

DOI: 10.1186/s13643-019-0990-z PMID: 30917869

08

Decision Models for Assessing the Cost Effectiveness of Treatments for Pediatric Drug-Resistant Epilepsy: A Systematic Review of Economic Evaluations.

Elliott J, van Katwyk S, McCoy B, Clifford T, Potter BK, Skidmore B, Wells GA, Coyle D

PharmacoEconomics2019

DOI: 10.1007/s40273-019-00816-2 PMID: 31201643

09

Cannabis-based products for pediatric epilepsy: A systematic review.

Elliott J, DeJean D, Clifford T, Coyle D, Potter BK, Skidmore B, Alexander C, Repetski AE, Shukla V, McCoy B, Wells GA

Epilepsia2019

DOI: 10.1111/epi.14608 PMID: 30515765

10

Toward a Centralized, Systematic Approach to the Identification, Appraisal, and Use of Health State Utility Values for Reimbursement Decision Making: Introducing the Health Utility Book (HUB)

Xie F, Zoratti M, Chan K, Husereau D, Krahn M, Levine O, Clifford T, Schunemann H, Guyatt G

Medical decision making201921 citations

DOI: 10.1177/0272989x19837969

Catalyzing registry-based randomized comparative effectiveness trials for inherited metabolic diseases in children: establishing a core outcome set and data collection tools

Principal investigatorCIHR2016Catalyst Grant: SPOR Innovative Clinical Trials (iCT)

Principal investigators: Potter, Elizabeth K; Clifford, Tammy J; Pallone, Nicole; Stockler, Sylvia

Keywords: Inherited Metabolic Disease; Pediatrics; Pragmatic Trial; Rare Disease; Registry; Registry-Based Randomized Trial

$100,000

Development and implementation of a reporting guideline for systematic reviews and meta-analyses of diagnostic accuracy studies: The PRISMA-DTA initiative

Co-investigatorCIHR2016Project Grant

Principal investigators: McInnes, Matthew; Moher, David; Thombs, Brett D

Keywords: Diagnostic Test Accuracy; Knowledge Translation; Meta-Analysis; Reporting Guidelines; Systematic Review

$100,000

Evidence and values: what role in health policy to divest from screening?

Principal investigatorCIHR2016Planning and Dissemination Grant - Institute Community Support

Principal investigators: Nicholls, Stuart G; Clifford, Tammy J; Little, Julian

Keywords: Clinical Practice Guideline; De-Implementation; Ethics; Knowledge Translation; Policy; Population Health; Practice; Screening; Values

$9,880

Getting knowledge now: are rapid reviews the way to go?

Co-investigatorCIHR2015Operating Grant

Principal investigators: Moher, David

Keywords: Algorithm Development; Knowledge Synthesis; Rapid Reviews; Reporting Guideline; Research Funders; Survey; Systematic Review Methodology; Tool Development; Utility

$231,146

A critical interpretive synthesis of recommendations for De-intensification and de-IMPLEmentation from population Screening (DIMPLES).

Nominated PICIHR2014Knowledge Synthesis Grant

Principal investigators: Clifford, Tammy J; Little, Julian

Keywords: Decision Making; Disinvestment; Health Policy; Public Health Ethics; Screening

$100,000

Canadian Collaborative for Methods, Applications, and Capacity Development in Network Meta-Analysis for Drug Safety and Effectiveness

Co-investigatorCIHR2011Team Grant: DSEN Collaborating Centre - Network Meta-Analysis

Principal investigators: Wells, George A; Coyle, Douglas A; Reeves, Barnaby C; Schunemann, Holger J; Thabane, Lehana

Keywords: Anticoagulants; Atrial Fibrillation; Bayesian Methods; Comparative Effectiveness; Drug Safety; Health Economics; Network Meta-Analysis; Stroke Prevention; Systematic Review

$911,520

From CIHR, NSERC and SSHRC funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998, including their latest published competition results.

Frequent collaborators

School of Epidemiology and Public Health
Health Research Methods, Evidence, and Impact
Pediatrics
Department of Medicine
Medicine
Toronto General Research Institute
Oncology
Other

Co-authors at University of Ottawa, colored by department. Thicker lines mean more shared papers; select anyone to open their profile and their own map.

Doug Coyle

School of Epidemiology and Public Health

16 shared papers, latest 2020

George Wells

School of Epidemiology and Public Health

6 shared papers, latest 2015

Marc Carrier

Department of Medicine

3 shared papers, latest 2014

Holger Schunemann

Health Research Methods, Evidence, and Impact

3 shared papers, latest 2025

Brian Hutton

School of Epidemiology and Public Health

3 shared papers, latest 2015

Tanya Horsley

Family Medicine

2 shared papers, latest 2018

Feng Xie

Health Research Methods, Evidence, and Impact

2 shared papers, latest 2019

Murray Krahn

Toronto General Research Institute

2 shared papers, latest 2019

David Moher

School of Epidemiology and Public Health

2 shared papers, latest 2018

Peter Tugwell

School of Epidemiology and Public Health

2 shared papers, latest 2025

Michael Zoratti

Health Research Methods, Evidence, and Impact

2 shared papers, latest 2019

Gordon Guyatt

Health Research Methods, Evidence, and Impact

2 shared papers, latest 2019

jean-paul salameh

Medical Imaging

1 shared papers, latest 2018

Beth Potter

School of Epidemiology and Public Health

1 shared papers, latest 2018

Tara Gomes

Psychosocial Oncology and Palliative Care

1 shared papers, latest 2015

Rachel Rodin

Clinical Epidemiology

1 shared papers, latest 2018

Eddy Lang

Emergency Medicine

1 shared papers, latest 2025

Lawrence Mbuagbaw

Health Research Methods, Evidence, and Impact

1 shared papers, latest 2025

Vivian Welch

School of Epidemiology and Public Health

1 shared papers, latest 2025

Write to this professor

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Applying for

Paper to mention

Subject: Prospective PhD student: Screening Dear Professor Clifford, My name is [your name], and I am a [your current degree or role] at [your institution]. I am applying for a PhD position starting in [term and year]. I read your paper "The GIN-McMaster Guideline Development Checklist extension for engagement" (2025), and it connects closely to my own work on [your research topic]. [One or two sentences on what you did and what you learned.] Are you accepting new PhD students for [term and year]? I have attached my CV and transcripts, and I would be glad to talk at a time that suits you. Thank you for your time. Kind regards, [your name]

Tammy Clifford

Research

Latest papers

Latest funding

The GIN-McMaster Guideline Development Checklist extension for engagement

Outlier analysis for accelerating clinical discovery: An augmented intelligence framework and a systematic review.

Barriers in accessing medical cannabis for children with drug-resistant epilepsy in Canada: A qualitative study.

Economic Evaluation of Cannabinoid Oil for Dravet Syndrome: A Cost-Utility Analysis.

Neurologists' perspectives on medical cannabis for pediatric drug-resistant epilepsy in Canada: A qualitative interview study.

Cannabis-based products for pediatric epilepsy: An updated systematic review.

Cost-effectiveness of cannabinoids for pediatric drug-resistant epilepsy: protocol for a systematic review of economic evaluations.

Decision Models for Assessing the Cost Effectiveness of Treatments for Pediatric Drug-Resistant Epilepsy: A Systematic Review of Economic Evaluations.

Cannabis-based products for pediatric epilepsy: A systematic review.

Toward a Centralized, Systematic Approach to the Identification, Appraisal, and Use of Health State Utility Values for Reimbursement Decision Making: Introducing the Health Utility Book (HUB)

Catalyzing registry-based randomized comparative effectiveness trials for inherited metabolic diseases in children: establishing a core outcome set and data collection tools

Development and implementation of a reporting guideline for systematic reviews and meta-analyses of diagnostic accuracy studies: The PRISMA-DTA initiative

Evidence and values: what role in health policy to divest from screening?

Getting knowledge now: are rapid reviews the way to go?

A critical interpretive synthesis of recommendations for De-intensification and de-IMPLEmentation from population Screening (DIMPLES).

Canadian Collaborative for Methods, Applications, and Capacity Development in Network Meta-Analysis for Drug Safety and Effectiveness

Frequent collaborators

Doug Coyle

George Wells

Marc Carrier

Holger Schunemann

Brian Hutton

Anna Gagliardi

Tanya Horsley

Feng Xie

Anna Gagliardi

Oren Levine

Murray Krahn

David Moher

Sunita Vohra

Peter Tugwell

Michael Zoratti

Gordon Guyatt

Lola Baydala

Kelvin Chan

jean-paul salameh

Beth Potter

Jessie McGowan

Nicholas Barrowman

Tara Gomes

Rachel Rodin

Eddy Lang

Robert Platt

Lawrence Mbuagbaw

Marcello Tonelli

Lisa Hartling

Marcello Tonelli

Vivian Welch