Vivien Teo, Anna Hodgkinson, John Weinman, Mark Chamley, Kai Zhen Yap
{"title":"A validation study of the Intentional Nonadherence Scale among people with type 2 diabetes in the United Kingdom.","authors":"Vivien Teo, Anna Hodgkinson, John Weinman, Mark Chamley, Kai Zhen Yap","doi":"10.1111/dme.70040","DOIUrl":null,"url":null,"abstract":"<p><strong>Aim: </strong>To examine the psychometric properties of the Intentional Nonadherence Scale (INAS) among people with type 2 diabetes mellitus (PwT2D) in the United Kingdom.</p><p><strong>Methods: </strong>This validation study recruited 260 PwT2D at diabetes intermediate care team clinics in London. Thirty of them participated in the test-retest reliability analysis in 2-4 weeks, while 124 were followed up in 3-6 months for the predictive validity analysis. The psychometric evaluation also comprised internal reliability, structural validity and construct validity that assessed the relationship between the INAS and other established measures, such as the Medication Adherence Report Scale-5 (MARS-5), Beliefs about Medicine Questionnaire (BMQ)-specific, Brief Illness Perception Questionnaire (BIPQ), Patient Health Questionnaire-2 (PHQ-2) and glycated haemoglobin (HbA1c).</p><p><strong>Results: </strong>Exploratory factor analysis revealed four factors, namely 'Resisting illness', 'Resisting medication', 'Testing treatment' and 'Sensitivity to medication'. All INAS factors demonstrated high internal reliability (Cronbach's alpha = 0.92-0.96). Their test-retest reliability varied between <0.001 and 0.92. Construct validity was demonstrated by its relationship with other measures, including its negative correlations with medication adherence and positive correlations with medication concerns. Significant correlations were also found with HbA1c, as well as with PwT2D's perceptions of diabetes consequences, treatment control, identity and emotional responses to diabetes. 'Testing Treatment' showed a trend towards statistical significance with adherence in 3-6 months (coefficient = -0.34, p = 0.09).</p><p><strong>Conclusions: </strong>The INAS performed well on a number of psychometric properties in this study. It may be a helpful tool for clinicians in identifying specific drivers of intentional nonadherence among PwT2D.</p>","PeriodicalId":11251,"journal":{"name":"Diabetic Medicine","volume":" ","pages":"e70040"},"PeriodicalIF":3.2000,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Diabetic Medicine","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1111/dme.70040","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENDOCRINOLOGY & METABOLISM","Score":null,"Total":0}
引用次数: 0
Abstract
Aim: To examine the psychometric properties of the Intentional Nonadherence Scale (INAS) among people with type 2 diabetes mellitus (PwT2D) in the United Kingdom.
Methods: This validation study recruited 260 PwT2D at diabetes intermediate care team clinics in London. Thirty of them participated in the test-retest reliability analysis in 2-4 weeks, while 124 were followed up in 3-6 months for the predictive validity analysis. The psychometric evaluation also comprised internal reliability, structural validity and construct validity that assessed the relationship between the INAS and other established measures, such as the Medication Adherence Report Scale-5 (MARS-5), Beliefs about Medicine Questionnaire (BMQ)-specific, Brief Illness Perception Questionnaire (BIPQ), Patient Health Questionnaire-2 (PHQ-2) and glycated haemoglobin (HbA1c).
Results: Exploratory factor analysis revealed four factors, namely 'Resisting illness', 'Resisting medication', 'Testing treatment' and 'Sensitivity to medication'. All INAS factors demonstrated high internal reliability (Cronbach's alpha = 0.92-0.96). Their test-retest reliability varied between <0.001 and 0.92. Construct validity was demonstrated by its relationship with other measures, including its negative correlations with medication adherence and positive correlations with medication concerns. Significant correlations were also found with HbA1c, as well as with PwT2D's perceptions of diabetes consequences, treatment control, identity and emotional responses to diabetes. 'Testing Treatment' showed a trend towards statistical significance with adherence in 3-6 months (coefficient = -0.34, p = 0.09).
Conclusions: The INAS performed well on a number of psychometric properties in this study. It may be a helpful tool for clinicians in identifying specific drivers of intentional nonadherence among PwT2D.
期刊介绍：
Diabetic Medicine, the official journal of Diabetes UK, is published monthly simultaneously, in print and online editions.
The journal publishes a range of key information on all clinical aspects of diabetes mellitus, ranging from human genetic studies through clinical physiology and trials to diabetes epidemiology. We do not publish original animal or cell culture studies unless they are part of a study of clinical diabetes involving humans. Categories of publication include research articles, reviews, editorials, commentaries, and correspondence. All material is peer-reviewed.
We aim to disseminate knowledge about diabetes research with the goal of improving the management of people with diabetes. The journal therefore seeks to provide a forum for the exchange of ideas between clinicians and researchers worldwide. Topics covered are of importance to all healthcare professionals working with people with diabetes, whether in primary care or specialist services.
Surplus generated from the sale of Diabetic Medicine is used by Diabetes UK to know diabetes better and fight diabetes more effectively on behalf of all people affected by and at risk of diabetes as well as their families and carers.”
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
