School of Health Sciences, University of Minho, Braga, Portugal.
Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal.
NPJ Prim Care Respir Med. 2017 Jan 12;27:16087. doi: 10.1038/npjpcrm.2016.87.
Enabling patients with asthma to obtain the knowledge, confidence and skills they need in order to assume a major role in the management of their disease is cost effective. It should be an integral part of any plan for long-term control of asthma. The modified Patient Enablement Instrument (mPEI) is an easily administered questionnaire that was adapted in the United Kingdom to measure patient enablement in asthma, but its applicability in Portugal is not known. Validity and reliability of questionnaires should be tested before use in settings different from those of the original version. The purpose of this study was to test the applicability of the mPEI to Portuguese asthma patients after translation and cross-cultural adaptation, and to verify the structural validity, internal consistency and reproducibility of the instrument. The mPEI was translated to Portuguese and back translated to English. Its content validity was assessed by a debriefing interview with 10 asthma patients. The translated instrument was then administered to a random sample of 142 patients with persistent asthma. Structural validity and internal consistency were assessed. For reproducibility analysis, 86 patients completed the instrument again 7 days later. Item-scale correlations and exploratory factor analysis were used to assess structural validity. Cronbach's alpha was used to test internal consistency, and the intra-class correlation coefficient was used for the analysis of reproducibility. All items of the Portuguese version of the mPEI were found to be equivalent to the original English version. There were strong item-scale correlations that confirmed construct validity, with a one component structure and good internal consistency (Cronbach's alpha >0.8) as well as high test-retest reliability (ICC=0.85). The mPEI showed sound psychometric properties for the evaluation of enablement in patients with asthma making it a reliable instrument for use in research and clinical practice in Portugal. Further studies are needed to confirm its responsiveness.
使哮喘患者获得管理疾病所需的知识、信心和技能，使其在疾病管理中发挥重要作用，这是具有成本效益的。这应该是长期控制哮喘计划的一个组成部分。改良的患者赋权量表（mPEI）是一种易于管理的问卷，在英国经过改编后用于衡量哮喘患者的赋权情况，但在葡萄牙的适用性尚不清楚。在与原始版本不同的环境中使用问卷之前，应先测试其有效性和可靠性。本研究的目的是在翻译和跨文化适应后，测试 mPEI 在葡萄牙哮喘患者中的适用性，并验证该工具的结构有效性、内部一致性和可重复性。mPEI 被翻译成葡萄牙语并回译回英语。通过对 10 名哮喘患者进行深入访谈，评估了其内容有效性。然后，将翻译后的工具应用于 142 名持续性哮喘患者的随机样本中。评估了结构有效性和内部一致性。为了进行可重复性分析，86 名患者在 7 天后再次完成了该工具。使用项目-量表相关性和探索性因子分析来评估结构有效性。Cronbach's alpha 用于测试内部一致性，而组内相关系数用于分析可重复性。葡萄牙语版 mPEI 的所有项目都与原始英语版本等效。有很强的项目-量表相关性，证实了结构有效性，具有一个单一成分结构和良好的内部一致性（Cronbach's alpha>0.8）以及较高的测试-重测可靠性（ICC=0.85）。mPEI 在评估哮喘患者的赋权方面具有良好的心理测量特性，是一种在葡萄牙进行研究和临床实践中可靠的工具。需要进一步的研究来确认其反应性。
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