Pip Griffiths

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

Pip Griffiths, Joel Sims, Abi Williams et al. · Quality of Life Research · 2022 · 43 citations

Management, Educational Measurement, Psychology +13

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

Pip Griffiths, Abi Williams, Elaine Brohan · Quality of Life Research · 2022 · 16 citations · Full text

Social Sciences, Behavioral Sciences, Psychology +13

Non-Newtonian channel flow—exact solutions

Pip Griffiths · IMA Journal of Applied Mathematics · 2020 · 13 citations · Full text

Engineering, Physics, Fluid Dynamics +16

A comprehensive evaluation of water uptake on atmospherically relevant mineral surfaces: DRIFT spectroscopy, thermogravimetric analysis and aerosol growth measurements

R. Joel Gustafsson, A. Orlov, C. L. Badger et al. · 2005 · 12 citations

Natural Sciences, Earth Sciences, Materials Science +17

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

Mrinal M. Gounder, Thomas M. Atkinson, Timothy Bell et al. · Quality of Life Research · 2023 · 11 citations · Full text

Nursing, Oncology, Cancer Symptom Management +16