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Premature mortality risk and associated economic loss assessment due to PM2.5 exposure in Delhi, India during 2015–2019

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Abstract

Particulate matter especially PM2.5 has always been a prime concern for human health. An Integrated Exposure–Response (IER) function and Value of Statistical Life (VSL) approach is used in the present study, for Delhi, India, to monitor the association between fine particulate matter (PM2.5) concentration and premature mortality for the five diseases: ischemic heart disease (IHD), stroke (STR), chronic obstructive pulmonary disease (COPD), lung neoplasms (LNC), and lower respiratory infections (LRI) and economic loss occurring due to them. It was found in the study that IHD (64%) has the highest risk, followed by stroke (19%), COPD (10%), LRI (4%), and LNC (3%). Significant economic loss for these diseases during the study period (on average annually) was found to be: IHD [20160.15, 95% CI:16,432.88—24,290.06], STR [6088.12, 95% CI: 4583.80- 7963.50], COPD [3176.32, 95% CI:2246.27—3818.32], LNC [881.13, 95% CI: 696.37 – 1087.61], LRI [1170.48, 95% CI:852.44—1542.76] million USD. Scenario modeling was done as part of this investigation to see if Delhi meeting India’s National Ambient Air Quality Standards (NAAQS) threshold (40 µg/m3) would lower premature deaths and provide economic benefits. Premature mortality has decreased for the following conditions: LRI (51.81%), LNC (47.76%), COPD (47.48%), STR (22.08%), and IHD (20.53%). Further, premature mortality can be potentially reduced, on average, by 95.66% for LRI, 90% for LNC, 88.75% for COPD, 85.40% for STR, and 62.19% for IHD for the study duration if 2005 World Health Organization (WHO) PM2.5 exposure limit (10 µg/m3) were reached. Similarly, economic benefits of 7987.39 [95% CI: 6219.57 – 9812.56] and 22,461.14 [95% CI: 17,585.92 – 27,707.95] million USD could have been reaped by maintaining NAAQS and WHO (2005 guidelines) prescribed limits. The estimated reduction in premature mortality and associated economic benefits due to decreased PM2.5 exposure calls for mitigation measures on an urgent basis.

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Data Availability

The raw data of air quality, economics and population is publicly available on websites of respective agencies. Other data, if needed, will be made available on request.

Abbreviations

AF:

Attributable Fraction

CAAQMS:

Continuous Ambient Air Quality Monitoring Stations

CEV:

Cerebrovascular Disease

CI:

Confidence Interval

CPCB:

Central Pollution Control Board

CR:

Concentration-Response

CRS:

Civil Registration System

ER:

Exposure-Response

GBD:

Global Burden of Disease

GEMM:

Global Exposure Mortality Model

GRAP:

Graded Response Action Plan

HEI:

Health Effects Institute

ICMR:

Indian Council of Medical Research

IER:

Integrated Exposure–Response

IGP:

Indo-Gangetic Plane

IHD:

Ischemic Heart Disease

IHME:

Institute of Health Metrics and Evaluation

LNC:

Lung Cancer

LRI:

Lower Respiratory Infection

NAAQS:

National Ambient Air Quality Standards

PHFI:

Public Health Foundation of India

PoP:

Exposed Population

RR:

Relative Risk

STR:

Stroke

yo :

Baseline Rate of Mortality

Z:

PM2.5 Concentration (µg/m3)

Zcf :

Counterfactual Concentration (µg/m3)

ΔMMort :

Excess Premature Mortality

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Acknowledgements

The authors kindly acknowledge the CPCB, India for the PM2.5 concentration data and GBD for the baseline mortality data.

Funding

This work was not supported by any funding.

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Correspondence to Ashutosh Kumar Pathak.

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Singh, A.K., Pathak, A.K. & Saini, G. Premature mortality risk and associated economic loss assessment due to PM2.5 exposure in Delhi, India during 2015–2019. Air Qual Atmos Health (2024). https://doi.org/10.1007/s11869-024-01550-1

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