The aim was to analyze the psychometric properties of the Spanish version of the Gain in Alzheimer Care Instrument (GAIN), providing validity evidence based on its internal structure, reliability, item analysis, and relationships with other variables. A sample of 113 informal caregivers of people with dementia completed the GAIN, along with questionnaires assessing burden, general mental health, stress, anxiety, depression, and life satisfaction. Confirmatory factor analysis showed a single-factor structure with adequate fit indices. Reliability of GAIN scores was satisfactory, with McDonald’s omega equal to .91. Items yielded adequate homogeneity indices. Validity evidence based on relationships with other variables was provided by positive correlations between GAIN scores and life satisfaction, and negative correlations with burden, general mental health problems, stress, anxiety, and depression. All these correlations were statistically significant, and most of them were of moderate magnitude. The Spanish version of the GAIN has a single-factor structure and satisfactory psychometric properties. It is quick and easy to apply and given the association between GAIN scores and other variables, it may be used to provide information about a caregiver’s psychological health status.

中文翻译：

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西班牙版《阿尔茨海默病护理增益》心理测量学特性的新证据

目的是分析西班牙版本的阿尔茨海默病护理增益 (GAIN) 的心理测量特性，根据其内部结构、可靠性、项目分析以及与其他变量的关系提供有效性证据。由 113 名痴呆症患者的非正式护理人员组成的样本完成了 GAIN，以及评估负担、一般心理健康、压力、焦虑、抑郁和生活满意度的问卷。验证性因素分析显示具有足够拟合指数的单因素结构。GAIN 评分的可靠性令人满意，麦当劳的 omega 等于 0.91。项目产生了足够的同质性指数。基于与其他变量关系的有效性证据由 GAIN 得分与生活满意度之间的正相关和与负担的负相关提供，一般心理健康问题、压力、焦虑和抑郁。所有这些相关性都具有统计学意义，其中大多数是中等程度的。西班牙版本的 GAIN 具有单因素结构和令人满意的心理测量特性。它应用起来既快速又容易，并且考虑到 GAIN 分数与其他变量之间的关联，它可用于提供有关护理人员心理健康状况的信息。