Pip Griffiths

GOunder/Desmoid Tumor Research Foundation DEsmoid Symptom/Impact Scale (GODDESS©): psychometric properties and clinically meaningful thresholds as assessed in the Phase 3 DeFi randomized controlled clinical trial.

Journal: Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation

Published: May 18, 2023

Correction: How strong should my anchor be for estimating group and individual level meaningful change? A simulation study assessing anchor correlation strength and the impact of sample size, distribution of change scores and methodology on establishing a true meaningful change threshold.

Journal: Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation

Published: February 09, 2023

A powerful partnership: researchers and patients working together to develop a patient-facing summary of clinical trial outcome data.

Journal: Journal of the American Medical Informatics Association : JAMIA

Published: January 21, 2023

Estimating meaningful thresholds for multi-item questionnaires using item response theory.

Journal: Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation

Published: January 21, 2023

Reliability and Validity of an Instrument of COVID-19 Patient-Reported Symptoms in Outpatients.

Journal: JAMA network open

Published: October 28, 2022

How strong should my anchor be for estimating group and individual level meaningful change? A simulation study assessing anchor correlation strength and the impact of sample size, distribution of change scores and methodology on establishing a true meaningful change threshold.

Journal: Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation

Published: October 24, 2022

Correction to: The Patient Matters in the End(point).

Journal: Advances in therapy

Published: September 09, 2022

Development and testing of an alternative responder definition for EULAR Sjögren's Syndrome Patient Reported Index (ESSPRI).

Journal: RMD open

Published: September 08, 2022

From Meaningful Outcomes to Meaningful Change Thresholds: A Path to Progress for Establishing Digital Endpoints.

Journal: Therapeutic innovation & regulatory science

Published: July 05, 2022

How do the number of missing daily diary days impact the psychometric properties and meaningful change thresholds arising from a weekly average summary score?

Journal: Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation

Published: July 05, 2022

GOunder/Desmoid Tumor Research Foundation DEsmoid Symptom/Impact Scale (GODDESS©): psychometric properties and clinically meaningful thresholds as assessed in the Phase 3 DeFi randomized controlled clinical trial.

GOunder/Desmoid Tumor Research Foundation DEsmoid Symptom/Impact Scale (GODDESS©): psychometric properties and clinically meaningful thresholds as assessed in the Phase 3 DeFi randomized controlled clinical trial.

Correction: How strong should my anchor be for estimating group and individual level meaningful change? A simulation study assessing anchor correlation strength and the impact of sample size, distribution of change scores and methodology on establishing a true meaningful change threshold.

Correction: How strong should my anchor be for estimating group and individual level meaningful change? A simulation study assessing anchor correlation strength and the impact of sample size, distribution of change scores and methodology on establishing a true meaningful change threshold.

A powerful partnership: researchers and patients working together to develop a patient-facing summary of clinical trial outcome data.

A powerful partnership: researchers and patients working together to develop a patient-facing summary of clinical trial outcome data.

Estimating meaningful thresholds for multi-item questionnaires using item response theory.

Estimating meaningful thresholds for multi-item questionnaires using item response theory.

Reliability and Validity of an Instrument of COVID-19 Patient-Reported Symptoms in Outpatients.

Reliability and Validity of an Instrument of COVID-19 Patient-Reported Symptoms in Outpatients.

How strong should my anchor be for estimating group and individual level meaningful change? A simulation study assessing anchor correlation strength and the impact of sample size, distribution of change scores and methodology on establishing a true meaningful change threshold.

How strong should my anchor be for estimating group and individual level meaningful change? A simulation study assessing anchor correlation strength and the impact of sample size, distribution of change scores and methodology on establishing a true meaningful change threshold.

Correction to: The Patient Matters in the End(point).

Correction to: The Patient Matters in the End(point).

Development and testing of an alternative responder definition for EULAR Sjögren's Syndrome Patient Reported Index (ESSPRI).

Development and testing of an alternative responder definition for EULAR Sjögren's Syndrome Patient Reported Index (ESSPRI).

From Meaningful Outcomes to Meaningful Change Thresholds: A Path to Progress for Establishing Digital Endpoints.

From Meaningful Outcomes to Meaningful Change Thresholds: A Path to Progress for Establishing Digital Endpoints.

How do the number of missing daily diary days impact the psychometric properties and meaningful change thresholds arising from a weekly average summary score?

How do the number of missing daily diary days impact the psychometric properties and meaningful change thresholds arising from a weekly average summary score?

Establishing thresholds for meaningful within-individual change using longitudinal item response theory.

Establishing thresholds for meaningful within-individual change using longitudinal item response theory.

The Patient Matters in the End(point).

The Patient Matters in the End(point).