Psychometric testing of the self-care of heart failure index
Psychometric testing of the self-care of heart failure index
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DOI：
10.1016/j.cardfail.2003.12.001
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发表时间：
2004-08-01
影响因子：
6
通讯作者：
Roland, V
中科院分区：
文献类型：
--
作者：
Riegel, B;Carlson, B;Roland, V
背景：自我护理被认为可以改善心力衰竭（HF）患者的预后。然而，测试这一假设的研究受到衡量自我照顾的困难的阻碍。本研究的目的是评估修订后的工具测量自我照顾的心力衰竭指数（SCHFI）的心力衰竭患者的心理测量特性。SCHFI是一个自我报告的措施，包括15个项目的4点反应量表，分为3 subscales.Methods和结果：心理测试进行了使用数据从760 HF患者（年龄70.36 +/- 12.3岁，51%男性）从7个网站在美国。SCHFI（α 76）的可靠性是足够的。自我护理维持子量表的可靠性低于预期（α.56），但其他子量表的可靠性是足够的：自我护理管理（α.70）和自我护理自信（α.82）。验证性因素分析（NFI = .69，CFI .73）的结构效度得到了满意的模型拟合支持。结构效度进一步支持显着的总和分量表（所有P <0.05）之间的差异与HF和那些新诊断的患者，符合基本theorety.Conclusion：低可靠性的自我护理维护分量表预计，因为项目反映的行为不同的个人。SCHFI的信度和效度足以支持其在临床研究中的应用。
Background: Self-care is believed to improve outcomes in heart failure (HF) patients. However, research testing this assumption is hampered by difficulties in measuring self-care. The purpose of this study was to evaluate the psychometric properties of a revised instrument measuring self-care in persons with HF, the Self-Care of Heart Failure Index (SCHFI). The SCHFI is a self-report measure comprised of 15 items rated on a 4-point response scale and divided into 3 subscales.Methods and Results: Psychometric testing was done using data from 760 HF patients (age 70.36 +/- 12.3 years, 51% male) from 7 sites in the United States. Reliability of the SCHFI (alpha .76) was adequate. Reliability of the Self-Care Maintenance subscale was lower than desired (alpha .56) but the reliability of the other subscales was adequate: Self-Care Management (alpha .70) and Self-Care Self-Confidence (alpha .82). Construct validity was supported with satisfactory model fit on confirmatory factor analysis (NFI = .69, CFI .73). Construct validity was supported further with significant total and subscale (all P < .05) differences between patients experienced with HF and those newly diagnosed, consistent with the underlying theory.Conclusion: Low reliability of the Self-Care Maintenance subscale was expected because the items reflect behaviors known to vary in individuals. The reliability and validity of the SCHFI are sufficient to support its use in clinical research.