Impact of air pollution on health in Klang Valley, Malaysia

In Malaysia, as in other parts of the world, air pollution has recently been receiving priority among environmental issues. The ambient atmospheric conditions have been progressively deteriorating due to unprecedented growth in urbanization, number of motor vehicles and continuous industrial develop...

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Main Authors:	Rafia, Afroz, Hassan, Mohd Nasir, Awang, Muhamad, Ibrahim, Akma
Format:	Article
Language:	English
Published:	IOI press 2006
Subjects:	H Social Sciences (General)
Online Access:	http://irep.iium.edu.my/6489/ http://irep.iium.edu.my/6489/ http://irep.iium.edu.my/6489/1/Document3.pdf

id	iium-6489
recordtype	eprints
spelling	iium-64892014-12-15T02:41:29Z http://irep.iium.edu.my/6489/ Impact of air pollution on health in Klang Valley, Malaysia Rafia, Afroz Hassan, Mohd Nasir Awang, Muhamad Ibrahim, Akma H Social Sciences (General) In Malaysia, as in other parts of the world, air pollution has recently been receiving priority among environmental issues. The ambient atmospheric conditions have been progressively deteriorating due to unprecedented growth in urbanization, number of motor vehicles and continuous industrial development. Monitoring data and studies on ambient air quality show that the ambient air quality of the country is clean in general but some of the air pollutants in several large cities especially in Klang Valley, the most densely populated area, are increasing with time and are not always at acceptable levels according to the national ambient air quality standards. This research employed contingent valuation method (CVM) to estimate the willingness to pay of the respondents to avoid the illness episodes due to air pollution. To evaluate the impact of additional information on the willingness to pay (WTP) of the respondents, different sub-samples were presented with contingent valuation scenarios offering different levels of information. One sub-sample was given the cause of ill-health episodes and the policy to be implemented to remedy the cause of the ill-health episodes (context version). Another sub-sample was asked to value the avoidance of episodes of ill-health, but was not given any details of the cause of the episodes nor the policy that would be implemented to remedy the cause of ill-health episodes (non-context version). The study has found that the inclusion of additional information in the presentation of scenarios in contingent valuation exercises significantly influenced WTP for the avoidance of ill-health episodes. The average mean value of WTP of the respondents for the context version was higher than that of the non-context version i.e. RM154 for the context version and RM134 for the non-context version. Since, WTP to avoid the ill-health episodes cannot be shown to be independent of the context in which it is valued, the validity of transferring benefits of avoided ill-health episodes from one country to another must be called into question and the results of the study will not allow decision makers to apply the estimated values for the avoidance of ill-health episodes in the consideration of policies with very different context. IOI press 2006 Article PeerReviewed application/pdf en http://irep.iium.edu.my/6489/1/Document3.pdf Rafia, Afroz and Hassan, Mohd Nasir and Awang, Muhamad and Ibrahim, Akma (2006) Impact of air pollution on health in Klang Valley, Malaysia. Asian Journal of Water Environment and Pollution, 3 (1). pp. 27-38. ISSN 0972-9860 (P) 1875-8568 (O) http://iospress.metapress.com/content/49xw2pqh80g37g7u/
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	H Social Sciences (General)
spellingShingle	H Social Sciences (General) Rafia, Afroz Hassan, Mohd Nasir Awang, Muhamad Ibrahim, Akma Impact of air pollution on health in Klang Valley, Malaysia
description	In Malaysia, as in other parts of the world, air pollution has recently been receiving priority among environmental issues. The ambient atmospheric conditions have been progressively deteriorating due to unprecedented growth in urbanization, number of motor vehicles and continuous industrial development. Monitoring data and studies on ambient air quality show that the ambient air quality of the country is clean in general but some of the air pollutants in several large cities especially in Klang Valley, the most densely populated area, are increasing with time and are not always at acceptable levels according to the national ambient air quality standards. This research employed contingent valuation method (CVM) to estimate the willingness to pay of the respondents to avoid the illness episodes due to air pollution. To evaluate the impact of additional information on the willingness to pay (WTP) of the respondents, different sub-samples were presented with contingent valuation scenarios offering different levels of information. One sub-sample was given the cause of ill-health episodes and the policy to be implemented to remedy the cause of the ill-health episodes (context version). Another sub-sample was asked to value the avoidance of episodes of ill-health, but was not given any details of the cause of the episodes nor the policy that would be implemented to remedy the cause of ill-health episodes (non-context version). The study has found that the inclusion of additional information in the presentation of scenarios in contingent valuation exercises significantly influenced WTP for the avoidance of ill-health episodes. The average mean value of WTP of the respondents for the context version was higher than that of the non-context version i.e. RM154 for the context version and RM134 for the non-context version. Since, WTP to avoid the ill-health episodes cannot be shown to be independent of the context in which it is valued, the validity of transferring benefits of avoided ill-health episodes from one country to another must be called into question and the results of the study will not allow decision makers to apply the estimated values for the avoidance of ill-health episodes in the consideration of policies with very different context.
format	Article
author	Rafia, Afroz Hassan, Mohd Nasir Awang, Muhamad Ibrahim, Akma
author_facet	Rafia, Afroz Hassan, Mohd Nasir Awang, Muhamad Ibrahim, Akma
author_sort	Rafia, Afroz
title	Impact of air pollution on health in Klang Valley, Malaysia
title_short	Impact of air pollution on health in Klang Valley, Malaysia
title_full	Impact of air pollution on health in Klang Valley, Malaysia
title_fullStr	Impact of air pollution on health in Klang Valley, Malaysia
title_full_unstemmed	Impact of air pollution on health in Klang Valley, Malaysia
title_sort	impact of air pollution on health in klang valley, malaysia
publisher	IOI press
publishDate	2006
url	http://irep.iium.edu.my/6489/ http://irep.iium.edu.my/6489/ http://irep.iium.edu.my/6489/1/Document3.pdf
first_indexed	2023-09-18T20:15:27Z
last_indexed	2023-09-18T20:15:27Z
_version_	1777407757318619136

Impact of air pollution on health in Klang Valley, Malaysia

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