The Keefer Lab
Advancing the science of behavioral gastroenterology through rigorous clinical trials, mentorship, and validated patient-reported outcome measures.
Recently Funded Behavioral Trials
PCORI 17-05887
Multi-site, randomized controlled non-inferiority trial of a digital v. face-to-face behavioral intervention for people living with IBD and comorbid mental health concerns.
G - 2401-08140
Single-site, randomized controlled efficacy trial comparing two types of behavioral intervention delivered at the time of a new biologic drug start in people living with Crohn’s disease.
Keefer Lab Mentees
Dr. Keefer has an active history of mentorship. She is primary mentor on several individual training grants and a co-investigator on a T32 for gastroenterology fellows at Mount Sinai.
She is particularly invested in mentoring junior faculty into K23 awards in gastroenterology to ensure the next generation of patient-centered outcomes researchers. Current K23 mentorship includes:
Former & Current Mentees
Sarah Ballou, PhD
Hyder Said, MD
Dustin Carlsen, MD, MS
Jordyn Feingold, MD, MAPP
Livia Guadagnoli, PhD
Kendra Kamp, PhD
Elizabeth Madva, MD
Sydney Phlegar
Esther Stein, PsyD
Itishree Trivedi, MD
Salva Balbale, PhD
Meredith Craven, PhD, MPH
Lori Gawron, MD
Robert Hirten, MD
Josie Lee
Andrea Mecquel, PhD, MAPP
Alicia Philippou, MD
Barbara Storch, PhD
Rena Yadlapati, MD
Alyse Bedell, PhD
Candela de Amorrortu
Ksenia Gorbenko, PhD
Marisa Izaguirre, MD
Taryn Lores, PhD
Michelle Mendiolaza, PhD
Jessica Salwen-Deremer, PhD
Tiffany H. Taft, PsyD
Helen Burton-Murray, PhD
Swathi Eluri, MD
Ruby Greywoode, MD
Ian Kahrilas, PhD
Yuying Luo, MD
Hannibal Person, MD
Priya Sehgal, MD, MPH
Elyse Thakur, PhD
Dr Keefer’s Validated Patient-Reported Outcome Measures
Dr Keefer’s Validated Patient-Reported Outcome Measures. I have a strong background in psychometrics, having validated several patient reported outcome measures across the spectrum of digestive disorders.
Many of these measures have been translated and adopted by pharma and/or the FDA as patient reported outcome measures for clinical trials.
Keefer L, Kiebles JL, Taft TH. The role of self-efficacy in inflammatory bowel disease management: preliminary validation of a disease-specific measure. Inflamm Bowel Dis. 2011;17(2):614–20.h
(Short 13-item version: BMC Gastroenterology 2024)
Izaguirre MR, Taft T, Keefer L. Validation of a self-efficacy scale for adolescents and young adults with inflammatory bowel disease. J Pediatr Gastroenterol Nutr. 2017
Taft TH, et al. Prospective assessment of disease-specific quality of life in adults with eosinophilic esophagitis. Dis Esophagus. 2011 (originally); further data in Dis Esophagus 2018;31(4).
Taft TH, et al. Validation of the oesophageal hypervigilance and anxiety scale for chronic oesophageal disease. Aliment Pharmacol Ther. 2018.
(Short form EHAS-7: ScienceDirect, CGH 2020)
Taft TH, Riehl M, Sodikoff JB, et al. Development of the Northwestern Esophageal Quality of Life Scale: a hybrid measure for use across esophageal conditions. Am J Gastroenterol. 2016.
Taft TH, et al. The dysphagia stress test for rapid assessment of swallowing difficulties in esophageal conditions. Neurogastroenterol Motil. 2019.
Jones MP, Keefer L, Bratten J, Taft TH, Crowell MD, Levy R, Palsson O. Development and initial validation of a measure of perceived stigma in irritable bowel syndrome. Psychol Health Med. 2009;14(3):367–74.
Taft TH, Keefer L, et al. Perceptions of illness stigma in patients with inflammatory bowel disease and irritable bowel syndrome. Qual Life Res. 2011.
Springer
Health-Related Quality of Life and Perceived Stigma in Eosinophilic Esophagitis, ScienceDirect 2024
Initial development and validation of a disease-specific resilience measure for inflammatory bowel disease: the RISE-IBD instrument. BMC Gastroenterol. 2025.
As described in: Resilience-based Integrated IBD Care Is Associated With Reductions in Health Care Use and Opioids. Clin Gastroenterol Hepatol. 2022.
Based on the North Carolina protocol for Irritable Bowel Syndrome by Olafur Palsson, PsyD, these protocols have been adapted and tested in randomized controlled trials for management of gastrointestinal symptoms.