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Article: Dietary habits and the short-term effects of air pollution on mortality in the Chinese population in Hong Kong

TitleDietary habits and the short-term effects of air pollution on mortality in the Chinese population in Hong Kong
Authors
Issue Date2012
PublisherB M J Publishing Group. The Journal's web site is located at http://jech.bmjjournals.com/
Citation
Journal Of Epidemiology And Community Health, 2012, v. 66 n. 3, p. 254-258 How to Cite?
Abstract
Background Both diet and air pollution are associated with mortality risks. However, no epidemiological study has examined the potential interaction between diet and air pollution on mortality. We assessed their interaction on an additive scale. Methods We analysed the data on daily concentrations of ambient air pollutants (PM 10, NO 2, SO 2 and O 3) and a total of 23 484 deaths in 1998 in Hong Kong. A standardised questionnaire was used in all four death registries to collect food frequency data from proxy respondents while waiting for the registration to be completed. We fitted a linear odds ratio model and estimated excess relative risk due to the interaction (ERRI) between air pollution and regular consumption (at least once per week) of each food item to measure departure from additivity of effects on mortality. Results We observed consistently negative ERRI between all of the four pollutants and regular consumption of vegetables, fruits and soy. The effects of PM10, NO2 and O3 were significant smaller in the subjects who regularly consumed fruits than those who never or seldom consumed such food. The effect modification of soy consumption on PM 10, NO 2 and SO 2 associated mortality was also found statistically significant. However, regular consumption of dairy products was associated with significant increased effects of PM 10 and NO 2. Conclusions This study provides insight into dietary habit as one of the modifiers of health effects of air pollution. Our findings merit further studies to characterise the influence of diet on air pollution-related health and elucidate the underlying mechanisms.
Persistent Identifierhttp://hdl.handle.net/10722/145970
ISSN
2013 Impact Factor: 3.294
ISI Accession Number ID
Funding AgencyGrant Number
Hong Kong Health Services Research Committee631012
Hong Kong Council on Smoking and Health
Hong Kong Health Care Promotion Fund215032
Funding Information:

The authors thank the Department of Health and Environmental Protection Department of Hong Kong for data and assistance. The authors would also like to thank the Hong Kong Health Services Research Committee (#631012) and Hong Kong Council on Smoking and Health for funding the Hong Kong Lifestyle and Mortality study from which the data of this study were derived.

References
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Author Affiliations
  1. Southern Medical University
  2. The University of Hong Kong
DC FieldValueLanguage
dc.contributor.authorOu, CQen_HK
dc.contributor.authorWong, CMen_HK
dc.contributor.authorHo, SYen_HK
dc.contributor.authorSchooling, Men_HK
dc.contributor.authorYang, Len_HK
dc.contributor.authorHedley, AJen_HK
dc.contributor.authorLam, THen_HK
dc.date.accessioned2012-03-27T09:04:38Z-
dc.date.available2012-03-27T09:04:38Z-
dc.date.issued2012en_HK
dc.identifier.citationJournal Of Epidemiology And Community Health, 2012, v. 66 n. 3, p. 254-258en_HK
dc.identifier.issn0143-005Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/145970-
dc.description.abstractBackground Both diet and air pollution are associated with mortality risks. However, no epidemiological study has examined the potential interaction between diet and air pollution on mortality. We assessed their interaction on an additive scale. Methods We analysed the data on daily concentrations of ambient air pollutants (PM 10, NO 2, SO 2 and O 3) and a total of 23 484 deaths in 1998 in Hong Kong. A standardised questionnaire was used in all four death registries to collect food frequency data from proxy respondents while waiting for the registration to be completed. We fitted a linear odds ratio model and estimated excess relative risk due to the interaction (ERRI) between air pollution and regular consumption (at least once per week) of each food item to measure departure from additivity of effects on mortality. Results We observed consistently negative ERRI between all of the four pollutants and regular consumption of vegetables, fruits and soy. The effects of PM10, NO2 and O3 were significant smaller in the subjects who regularly consumed fruits than those who never or seldom consumed such food. The effect modification of soy consumption on PM 10, NO 2 and SO 2 associated mortality was also found statistically significant. However, regular consumption of dairy products was associated with significant increased effects of PM 10 and NO 2. Conclusions This study provides insight into dietary habit as one of the modifiers of health effects of air pollution. Our findings merit further studies to characterise the influence of diet on air pollution-related health and elucidate the underlying mechanisms.en_HK
dc.languageengen_US
dc.publisherB M J Publishing Group. The Journal's web site is located at http://jech.bmjjournals.com/en_HK
dc.relation.ispartofJournal of Epidemiology and Community Healthen_HK
dc.subject.meshAir Pollutants - adverse effects - analysis-
dc.subject.meshAsian Continental Ancestry Group - ethnology-
dc.subject.meshDiet - ethnology-
dc.subject.meshMortality-
dc.subject.meshParticulate Matter - adverse effects-
dc.titleDietary habits and the short-term effects of air pollution on mortality in the Chinese population in Hong Kongen_HK
dc.typeArticleen_HK
dc.identifier.emailWong, CM:hrmrwcm@hkucc.hku.hken_HK
dc.identifier.emailHo, SY:syho@hku.hken_HK
dc.identifier.emailSchooling, M:cms1@hkucc.hku.hken_HK
dc.identifier.emailHedley, AJ:hrmrajh@hkucc.hku.hken_HK
dc.identifier.emailLam, TH:hrmrlth@hkucc.hku.hken_HK
dc.identifier.authorityWong, CM=rp00338en_HK
dc.identifier.authorityHo, SY=rp00427en_HK
dc.identifier.authoritySchooling, M=rp00504en_HK
dc.identifier.authorityHedley, AJ=rp00357en_HK
dc.identifier.authorityLam, TH=rp00326en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1136/jech.2009.103275en_HK
dc.identifier.pmid20884669-
dc.identifier.scopuseid_2-s2.0-84857190242en_HK
dc.identifier.hkuros198829en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84857190242&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume66en_HK
dc.identifier.issue3en_HK
dc.identifier.spage254en_HK
dc.identifier.epage258en_HK
dc.identifier.isiWOS:000300039600010-
dc.publisher.placeUnited Kingdomen_HK
dc.relation.projectImpact of air pollution on premature deaths in Hong Kong-
dc.relation.projectA mega-case-control study (20,000 deaths and 30,000 controls) on smoking and mortality in Hong Kong-
dc.identifier.scopusauthoridOu, CQ=14070561800en_HK
dc.identifier.scopusauthoridWong, CM=7404954904en_HK
dc.identifier.scopusauthoridHo, SY=7403716884en_HK
dc.identifier.scopusauthoridSchooling, M=12808565000en_HK
dc.identifier.scopusauthoridYang, L=36509469400en_HK
dc.identifier.scopusauthoridHedley, AJ=7102584095en_HK
dc.identifier.scopusauthoridLam, TH=7202522876en_HK
dc.identifier.citeulike8451366-

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