John T. Farrar

University of Pennsylvania — United States

Medicine · Health Sciences

85h-index43.1kcitations378works3.42yr avg
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Research Topics

Musculoskeletal pain and rehabilitation(66), Pain Management and Opioid Use(55), Pain Mechanisms and Treatments(53), Pain Management and Placebo Effect(48), Opioid Use Disorder Treatment(23)

Publications378 total

The impact of opioid withdrawal symptoms on pain outcomes in enriched enrollment randomized withdrawal trials: a mediation meta-analysis of trials submitted to the US Food and Drug Administration
Pain·2025
Risk Factors for Fatigue in Adults Receiving Maintenance Hemodialysis Who Have Chronic Pain: A Secondary Analysis of the HOPE Consortium Trial
Kidney Medicine·2025Open Access
Rate of biopsy prior to resection among patients with high-grade glioma: a nationwide database analysis
Journal of neurosurgery·2025
Real-world data and evidence in pain research: an IMMPACT comprehensive review and best practice recommendations
Pain·2025· 3 citedOpen Access
Predictors of response to full agonist opioids in enriched enrollment randomized withdrawal clinical trials: a participant-level data meta-analysis
Pain·2025
Group Response Analysis: Clinically Interpretable Longitudinal Responder Analysis Methods Developed Using FDA Data
2025Open Access
Perception of neurosurgery among surgical patients with essential tremor: A qualitative mixed methods study
World Neurosurgery X·2025Open Access
Predictors of Supplemental Opioid Use After Third Molar Extraction
2025Open Access
Predictors of successful initiation of buprenorphine in enriched enrollment randomized withdrawal clinical trials in both opioid experienced and naïve participants: a participant-level meta-analysis
PAIN Reports·2025Open Access
Widespread Pain Moderates the Response to Centrally‐Acting Therapies in an Observational Cohort of Patients With Urologic Chronic Pelvic Pain Syndrome: A MAPP Research Network Study
Neurourology and Urodynamics·2025· 6 citedOpen Access
Minimum clinically important differences in acute pain: a patient-level re-analysis of randomized controlled analgesic trials submitted to the US Food and Drug Administration
Pain·2025· 7 citedOpen Access
Towards precision medicine in clinical trials for the treatment of urologic chronic pelvic pain syndrome: lessons from the MAPP Research Network
Nature Reviews Urology·2025· 4 cited
Prevalence and risk factors for the development of chronic postoperative pain after cataract surgery in the Age-related Eye Disease Study (AREDS)
Journal of Pain·2025· 1 citedOpen Access
Correlation of the clinical rating scale for tremor with a global assessment
Clinical Neurology and Neurosurgery·2024· 2 cited
Methodology for determining minimally clinically important differences in acute pain intensity with the double stopwatch technique
Journal of Pain·2024· 2 cited
Widespread pain phenotypes impact treatment efficacy results in randomized clinical trials for interstitial cystitis/bladder pain syndrome: a Multidisciplinary Approach to the Study of Chronic Pelvic Pain network study
Pain·2024· 17 citedOpen Access
End-of-Life Health Care Service Use and Cost Among Medicare Decedents With Neurodegenerative Diseases
Neurology·2024· 11 citedOpen Access
Reasons for Hospitalizations and Emergency Department Visits Among Patients with Essential Tremor
Tremor and Other Hyperkinetic Movements·2024Open Access
Methods for pragmatic randomized clinical trials of pain therapies: IMMPACT statement
Pain·2024· 8 citedOpen Access
Disparities in the Evaluation and Treatment of Pediatric Migraine in the Emergency Department Using a Language-learning Model (P2-12.007)
Neurology·2024
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Frequent Co-authors

Dennis C. Turk(16), Robert H. Dworkin(15), Bob A. Rappaport(12), Laurie B. Burke(11), Penney Cowan(9), Sharon Hertz(9), James Witter(9), Nathaniel P. Katz(8), Alejandro R. Jadad(7), Charles S. Cleeland(7), David Cella(7), Susan S. Ellenberg(7), Mark P. Jensen(6), Donald C. Manning(6), Michael McDermott(6), Steve Quessy(6), Joseph Stauffer(6), Nicholas Bellamy(5), Patrick J. McGrath(5), Christine Rauschkolb(5)