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Journal Article

Citation

Liu Q, Du M, Wang Y, Deng J, Yan W, Qin C, Liu M, Liu J. Bull. World Health Organ. 2024; 102(6): 410-420.

Copyright

(Copyright © 2024, World Health Organization)

DOI

10.2471/BLT.23.290243

PMID

38812801

PMCID

PMC11132161

Abstract

OBJECTIVE: To assess global, regional and national trends in the impact of floods from 1990 to 2022 and determine factors influencing flood-related deaths.

METHODS: We used data on flood disasters from the International Disaster Database for 1990-2022 from 168 countries. We calculated the annual percentage change to estimate trends in the rates of people affected and killed by floods by study period, World Health Organization (WHO) region, country income level and flood type. We used multivariable logistic regression analysis to assess the factors associated with death from floods.

FINDINGS: From 1990 to 2022, 4713 floods were recorded in 168 countries, which affected > 3.2 billion people, caused 218 353 deaths and were responsible for more than 1.3 trillion United States dollars of economic losses. The WHO Western Pacific Region had the most people affected by floods (> 2.0 billion), accounting for 63.19% (2 024 599 380/3 203 944 965) of all affected populations. The South-East Asia Region had the most deaths (71 713, 32.84%). The African and Eastern Mediterranean Regions had the highest number of people affected and killed by floods per 100 000 population in 2022. The odds of floods causing more than 50 deaths were significantly higher in low-income countries (adjusted odds ratio: 14.34; 95% confidence interval: 7.46 to 30.04) compared with high-income countries. Numbers of people affected and mortality due to floods declined over time.

CONCLUSION: Despite the decreases in populations affected and deaths, floods still have a serious impact on people and economies globally, particularly in lower-income countries. Action is needed to improve disaster risk management and flood mitigation.


Language: en

Keywords

Humans; Logistic Models; Developing Countries; Disasters; Global Health; *Floods; Natural Disasters

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