Healthy aging is an effective measure for society to cope with population aging. The Fourteenth Five-Year Plan for Healthy Aging states that the Healthy China Strategy and the National Strategy for Actively Responding to Population Aging should be promoted in a coordinated manner, so that the health needs of the elderly can be continuously met and their health steadily improved. In 2015, the World Health Organization released its Global Report on Aging and Health, which centered on the introduction of a new conceptual framework for healthy aging. This concept is functionally based, focusing on the establishment and maintenance of the older person's own state of health in order to promote the ability to do what they consider valuable, i.e., the intrinsic capacity. It follows that increasing and maintaining the level of intrinsic capacity of older persons is a core initiative in promoting healthy aging. Based on the review of domestic and international research on the theoretical tracing, conceptual definition, quantitative methods, and application of the current situation of intrinsic capacity, this paper proposes the methods of factor analysis, mediation analysis, and moderated analysis to quantitatively assess the scientific and comprehensive intrinsic capacity of the elderly. The method can accurately classify an individual's level of health, provide personalized identification of different dimensions of intrinsic decline in capacity in elderly, and are valuable in accurately predicting subsequent utilization of aging health services, long-term care services, disease regression, and risk of illness. This study provides directions for future in-depth exploration of the effectiveness and long-term impact of different intervention models. By identifying changes in intrinsic capacity at an early stage, it can provide a scientific basis for relevant health authorities to develop and implement targeted interventions in a timely manner. This will not only help to reduce the risk of adverse health outcomes in older people, but also contribute to the realization of healthy aging.

健康老龄化是社会应对人口老龄化的有效措施，《"十四五"健康老龄化规划》明确提出要协同推进健康中国战略和积极应对人口老龄化国家战略，不断满足老年人健康需求，稳步提升老年人健康水平。2015年WHO发布的《关于老龄化与健康的全球报告》引入了全新的健康老龄化概念框架，该框架以功能为基础，着眼于建立和保持老年人自身的健康状态，以促使老年人拥有完成其自身认为有价值事情的能力，即内在能力。由此可见，维持和提高老年人的内在能力水平是促进健康老龄化的核心举措。本文在综述国内外关于内在能力的理论追溯、概念界定、量化方法、应用现状等研究的基础上，进一步阐述了应用因子分析、中介分析及调节分析的方法量化评估老年人内在能力的复合测量技术，该技术能够对健康程度进行准确划分，为老年人不同维度的内在能力下降提供个性化识别，在精准预测后续老龄卫生服务利用、长期护理服务、疾病转归和患病风险等方面具有重要价值。本研究为未来深入探讨不同干预模式的有效性及长期影响提供了方向。早期识别内在能力的变化，能够为相关卫生部门提供科学依据，以便及时制定并实施针对性干预措施。这不仅有助于降低老年人出现不良健康结局的风险，还有助于促进健康老龄化的实现。