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Degui Wang1, Zongqing Feng2, Jinying Zhang3

  • 1Baita Junior High School, Kunming, Yunnan, China, China.

Frontiers in public health
|January 2, 2026
PubMed
概括

No abstract available in PubMed .

关键词:
年轻人剂量与反应非线性建模身体健康指数 (PFI)学校体育教育政策一个门

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Epidemiological study designs are fundamental tools for investigating the distribution, determinants, and control of health conditions in populations. They help researchers understand the relationships between exposures and outcomes, and they broadly fall into two categories: "observational" and "experimental" studies.
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