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P52 Measuring patient experience of GI endoscopy: psychometric properties of the Newcastle ENDOPREM
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P52 Measuring patient experience of GI endoscopy: psychometric properties of the Newcastle ENDOPREM
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Journal Article
P52 Measuring patient experience of GI endoscopy: psychometric properties of the Newcastle ENDOPREM
2021
Overview
IntroductionGastrointestinal (GI) endoscopy and computed tomography colonoscopy (CTC) are widely performed investigations of the GI tract. Patient experience affects future uptake, attendance for surveillance and correlates with outcomes.1 Current measures of experience are clinician and nurse-derived.2 The Newcastle ENDOPREMTM was developed using a rigorous systematic process based on qualitative patient interviews.3 This study aimed to investigate the psychometric properties of the instrument.MethodsPatients aged ≥18 years, undergoing oesophagogastroduodenoscopy (OGD), colonoscopy or CTC at four sites in North East England were prospectively asked to complete the PREM. Using IBM®SPSS® 24, we examined response rates and patterns, missing values, floor and ceiling effects and item-total correlations. Exploratory factor analysis (EFA) was conducted using principal components analysis. Reliability of factors was assessed using Cronbach’s α.Results799 questionnaires were returned from Oct 2017 – Sept 2018 (response rate 48.4%). Respondents were aged 18–95 years (mean 65.3, SD 12.6), 43.3% were male and 41.1% had undergone OGD, 43.3% colonoscopy and 14.4% CTC. 24 of the 59 questions had a ceiling effect (>40% choosing the ‘best’ response). No questions had floor effects. For three questions, more than 5% of respondents failed to answer. The highest was 8.6%. The mean number of questions missed was 1.2; this was higher in older patients. Eight questions correlated poorly with others (rho<0.3) and were excluded from EFA. EFA showed seven factors, explaining 61.5% of the variance. All factors had Cronbach’s α >0.6, indicating good reliability.3 ConclusionsThe Newcastle ENDOPREMTM has good psychometric properties. This analysis has enabled refinement of some questions and item reduction, resulting in a PREM, derived from patients’ reports, which comprehensively assesses patient experience across GI investigative modalities.ReferencesEkkelenkamp VE, et al. Patient comfort and quality in colonoscopy. World J Gastroenterol 2013;19(15):2355–61Brown S, et al. Patient-derived measures of GI endoscopy: a meta-narrative review of the literature. Gastrointest Endosc 2015;81(5):1130–40Neilson LJ et al. Patient experience of gastrointestinal endoscopy: informing the development of the Newcastle ENDOPREMTM. Frontline Gastroenterol 2020;0:1–9.
Publisher
BMJ Publishing Group LTD
