Masselot, P.* ; Sera, F.* ; Schneider, R.* ; Kan, H.* ; Lavigne, E.* ; Stafoggia, M.* ; Tobias, A.* ; Chen, H.* ; Burnett, R.T.* ; Schwartz, J.* ; Zanobetti, A.* ; Bell, M.L.* ; Chen, B.Y.* ; Leon Guo, Y.L.* ; Ragettli, M.S.* ; Vicedo-Cabrera, A.M.* ; Åström, C.* ; Forsberg, B.* ; Iñiguez, C.* ; Garland, R.M.* ; Scovronick, N.* ; Madureira, J.* ; Nunes, B.* ; De la Cruz Valencia, C.* ; Hurtado Diaz, M.* ; Honda, Y.* ; Hashizume, M.* ; Fook Cheng Ng, C.* ; Samoli, E.* ; Katsouyanni, K.* ; Schneider, A.E. ; Breitner-Busch, S. ; Ryti, N.R.I.* ; Jaakkola, J.J.K.* ; Maasikmets, M.* ; Orru, H.* ; Guo, Y.* ; Valdés Ortega, N.* ; Matus Correa, P.* ; Tong, S.* ; Gasparrini, A.*
     
 
    
        
Differential mortality risks associated with PM2.5 components: A multi-country, multi-city study.
    
    
        
    
    
        
        Epidemiology 33, 167-175 (2022)
    
    
    
		
		
			
				BACKGROUND: The association between fine particulate matter (PM2.5) and mortality widely differs between as well as within countries. Differences in PM2.5 composition can play a role in modifying the effect estimates, but there is little evidence about which components have higher impacts on mortality. METHODS: We applied a two-stage analysis on data collected from 210 locations in 16 countries. In the first stage, we estimated location-specific relative risks (RR) for mortality associated with daily total PM2.5 through time series regression analysis. We then pooled these estimates in a meta-regression model that included city-specific logratio-transformed proportions of seven PM2.5 components as well as meta-predictors derived from city-specific socio-economic and environmental indicators. RESULTS: We found associations between RR and several PM2.5 components. Increasing the ammonium (NH4+) proportion from 1% to 22%, while keeping a relative average proportion of other components, increased the RR from 1.0063 (95%CI: 1.0030-1.0097) to 1.0102 (95%CI:1.0070-1.0135). Conversely, an increase in nitrate (NO3-) from 1% to 71% resulted in a reduced RR, from 1.0100 (95%CI: 1.0067-1.0133) to 1.0037 (95%CI: 0.9998- 1.0077). Differences in composition explained a substantial part of the heterogeneity in PM2.5 risk. CONCLUSIONS: These findings contribute to the identification of more hazardous emission sources. Further work is needed to understand the health impacts of PM2.5 components and sources given the overlapping sources and correlations among many components.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        Fine Particulate Matter; Air-pollution; Chemical-constituents; Hospital Admissions; Short-term; Cardiovascular Mortality; R-package; Health; Models; Emissions
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2022
    
 
    
        Prepublished im Jahr 
        2021
    
 
    
        HGF-Berichtsjahr
        2021
    
 
    
    
        ISSN (print) / ISBN
        1044-3983
    
 
    
        e-ISSN
        1531-5487
    
 
    
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	    Band: 33,  
	    Heft: 2,  
	    Seiten: 167-175 
	    Artikelnummer: ,  
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            Lippincott Williams & Wilkins
        
 
        
            Verlagsort
            Two Commerce Sq, 2001 Market St, Philadelphia, Pa 19103 Usa
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
    
        Institut(e)
        Institute of Epidemiology (EPI)
    
 
    
        POF Topic(s)
        30202 - Environmental Health
    
 
    
        Forschungsfeld(er)
        Genetics and Epidemiology
    
 
    
        PSP-Element(e)
        G-504000-001
    
 
    
        Förderungen
        NIEHS-funded HERCULES Center
EU HORIZON 2020 Project EMERGE
Academy of Finland
European Union
Natural Environment Research Council of UK
Medical Research Council of UK
    
 
    
        Copyright
        
    
 	
    
    
    
    
    
        Erfassungsdatum
        2022-02-03