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Dimensions of Health and Illness01:21

Dimensions of Health and Illness

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Related Experiment Videos

Development of a global integrated environmental quality index for population health research.

Wenjie Ruan, Qi Zhao, Xiaoyue Liu

    Environmental Pollution (Barking, Essex : 1987)
    |July 3, 2026
    PubMed
    Summary

    A new Environmental Quality Index (EQI) reveals global disparities in environmental risk. Higher EQI scores correlate with increased non-communicable disease (NCD) mortality, highlighting the need for targeted public health interventions.

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    Area of Science:

    • Environmental science
    • Public health
    • Epidemiology

    Background:

    • Population health is impacted by multiple environmental stressors, but their combined effects are not well understood.
    • A standardized Environmental Quality Index (EQI) is needed for global comparisons and to prioritize interventions.
    • Existing research lacks a comprehensive assessment of integrated environmental risks on a global scale.

    Purpose of the Study:

    • To develop a globally comparable Environmental Quality Index (EQI) integrating multiple environmental domains.
    • To quantify environmental quality across 96 countries and assess its relationship with non-communicable diseases (NCDs).
    • To provide a tool for international environmental monitoring and public health policy.

    Main Methods:

    • Selected five environmental domains (air pollution, vegetation, water, light, climate, meteorology) with thirteen features.
    • Utilized the D-CRITIC method for objective feature weighting to construct the EQI.
    • Analyzed temporal associations between EQI scores and NCD mortality rates, including lagged effects.

    Main Results:

    • Vegetation features, particularly NDVI, received high weights in the EQI.
    • Kuwait and Canada showed the least favorable environmental conditions (highest EQI) among developing and developed nations, respectively.
    • Observed directional agreement and lagged associations between EQI changes and NCD mortality in several countries.

    Conclusions:

    • Developed a globally comparable, multi-domain EQI to assess environmental risk burden across countries.
    • The EQI provides insights into the temporal relationship between environmental quality and NCD mortality.
    • The EQI can support international environmental monitoring, benchmarking, and public health interventions.