Aim: The purpose of the this study was to test the factorial structure, internal consistency reliability and concurrent validity of the Caregiver Contribution to Self-Care Chronic Illness Inventory.
Background: Existing measures of caregiver contribution to self-care are disease-specific or behaviour-specific; no generic measures exist.
Design: A cross-sectional study.
Method: Between April 2017 - December 2018, we enrolled a convenience sample of 358 patients with chronic illnesses and their caregivers. Patients completed the Self-Care of Chronic Illness Inventory while caregivers completed the Caregiver Contribution to Self-Care of Chronic Illness Inventory, a modification of the Self-Care of Chronic Illness Inventory, which includes three scales as follows: the Caregiver Contribution to Self-Care Maintenance, the Caregiver Contribution to Self-Care Monitoring and the Caregiver Contribution to Self-Care Management. Of each scale, we tested the factorial structure with confirmatory factor analysis and reliability with the factor score determinacy coefficient, the global reliability index for multidimensional scale and Cronbach's alpha. Also, we used Pearson's correlations for concurrent validity purposes.
Results: Confirmatory factor analysis supported the two-factor structure of the Caregiver Contribution to Self-Care Maintenance and Management scales and the one-factor structure of the Caregiver Contribution to Self-Care Monitoring scale. A simultaneous confirmatory factor analysis on the combined set of items supported the more general model (Comparative Fit Index = 0.933). Reliability estimates ranged between 0.701 and 0.961 across the three scales. Concurrent validity of Caregiver Contribution to Self-Care of Chronic Illness Inventory with the Self-Care of Chronic Illness Inventory was not sufficiently supported since weak correlations were found.
Conclusion: The Caregiver Contribution to Self-Care of Chronic Illness Inventory is valid and reliable and can be used in clinical practice and research.
Impact: The Caregiver Contribution to Self-Care of Chronic Illness Inventory is an useful instrument to evaluate the extent to which caregivers contribute to patient self-care in chronic illnesses.
目的: 本研究旨在检验慢性疾病护理人员自我照顾贡献量表的因子结构、内部一致信度及并发效度。 背景: 现有护理人员对自我照顾的贡献衡量标准均是以疾病或行为为基础;无通用衡量标准。 设计: 横断面研究。 方法: 2017年4月至2018年12月间,我们对358名慢性病患者及其护理人员进行随机抽样调查。患者已填写慢性疾病自我照顾量表,且护理人员已填写其对慢性病自我照顾贡献量表,此量表是在慢性疾病自我照顾量表的基础上修订,包括三个量表:护理人员对自我照顾的贡献,护理人员对自我照顾监控的贡献以及护理人员对自我照顾管理的贡献。各量表中,我们通过验证性因子分析对因子结构进行检验,并用因子得分确定系数、多维量表整体信度指标和克隆巴赫系数,以进行信度检验。同时,我们利用皮尔逊相关系数进行并发效度分析。 结果: 验证性因子分析可在护理人员自我照顾共享维持与管理量表中所列双因素结构和护理人员自我照顾监测量表中所列单因素结构中适用。一般模型可在组合项目的同时验证性因素分析中适用(比较拟合指数=0.933)。经预计,上述三个量表的信度介于0.701到0.961之间。慢性疾病护理人员自我照顾量表与慢性疾病患者自我照顾量表的并发效度呈弱相关,因此,慢性疾病患者自我照顾量表未充分使用。 结论: 慢性疾病护理人员自我照顾贡献量表有效、可靠,可在临床实践和研究中使用。 影响: 慢性疾病护理人员自我照顾贡献量表是评估护理人员对慢性疾病患者自我照顾的贡献程度的有效工具。.
Keywords: caregiver contribution; caregivers; chronic disease; instrument development; multimorbidity; nursing; psychometrics; reliability; self-care; validity.
© 2020 John Wiley & Sons Ltd.