AIM: to explore the relation between diabetic retinopathy (DR) and systemic factors through factor analysis.

目的：探讨糖尿病视网膜病变(DR)与全身因素的关系。

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Part two describes and analyzes the development of school health mode in the U. S. A through factor analysis and history analysis.

第二章运用历史分析法和因素分析法，描述和分析了美国学校健康模式的历史演进过程。

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The scale of public trust on Food Safety Administration Agencies in China was developed through factor analysis method, and SEM method was used to investigate the effects.

首先采用了因素分析的方法，编制了中国公众对中国食品管理机构信任量表，并用结构方程模型的方法去研究信任的作用。

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