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Examining the Benefits of Greenness on Reducing Suicide Mortality Rate: A Global Ecological Study.


ABSTRACT:

Objective

This study applied an ecological-based analysis aimed to evaluate on a global scale the association between greenness exposure and suicide mortality.

Methods

Suicide mortality data provided by the Institute for Health Metrics and Evaluation and the Normalized Difference Vegetation Index (NDVI) were employed. The generalized additive mixed model was applied to evaluate with an adjustment of covariates the association between greenness and suicide mortality. Sensitivity tests and positive-negative controls also were used to examine less overt insights. Subgroup analyses were then conducted to investigate the effects of greenness on suicide mortality among various conditions.

Results

The main finding of this study indicates a negative association between greenness exposure and suicide mortality, as greenness significantly decreases the risk of suicide mortality per interquartile unit increment of NDVI (relative risk = 0.69, 95%CI: 0.59-0.81). Further, sensitivity analyses confirmed the robustness of the findings. Subgroup analyses also showed a significant negative association between greenness and suicide mortality for various stratified factors, such as sex, various income levels, urbanization levels, etc.

Conclusions

Greenness exposure may contribute to a reduction in suicide mortality. It is recommended that policymakers and communities increase environmental greenness in order to mitigate the global health burden of suicide.

SUBMITTER: Asri AK 

PROVIDER: S-EPMC9294351 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature

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Publications

Examining the Benefits of Greenness on Reducing Suicide Mortality Rate: A Global Ecological Study.

Asri Aji Kusumaning AK   Tsai Hui-Ju HJ   Wong Pei-Yi PY   Lee Hsiao-Yun HY   Pan Wen-Chi WC   Guo Yue-Leon YL   Wu Chi-Shin CS   Su Huey-Jen HJ   Wu Chih-Da CD   Spengler John D JD  

Frontiers in public health 20220705


<h4>Objective</h4>This study applied an ecological-based analysis aimed to evaluate on a global scale the association between greenness exposure and suicide mortality.<h4>Methods</h4>Suicide mortality data provided by the Institute for Health Metrics and Evaluation and the Normalized Difference Vegetation Index (NDVI) were employed. The generalized additive mixed model was applied to evaluate with an adjustment of covariates the association between greenness and suicide mortality. Sensitivity te  ...[more]

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