Cheelo, M.* ; Lodge, C.J.* ; Dharmage, S.C.* ; Simpson, J.A.* ; Matheson, M.C.* ; Heinrich, J. ; Lowe, A.J.*
     
 
    
        
Paracetamol exposure in pregnancy and early childhood and development of childhood asthma: A systematic review and meta-analysis.
    
    
        
    
    
        
        Arch. Dis. Childhood 100, 81-89 (2015)
    
    
		
		
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			Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
		
     
    
		
		
			
				BACKGROUND AND OBJECTIVE: While paracetamol exposure in pregnancy and early infancy has been associated with asthma, it remains unclear whether this is confounded by respiratory tract infections, which have been suggested as an alternative explanation. We undertook a systematic review and meta-analysis of longitudinal studies that reported the association between paracetamol exposure during pregnancy or infancy and the subsequent development of childhood asthma (≥5 years). METHODS: Two independent researchers searched the databases EMBASE and PUBMED on 12 August 2013 for relevant articles using predefined inclusion and exclusion criteria. Study quality was assessed and results were pooled using fixed effect models or random effect models when moderate between-study heterogeneity was observed. We explicitly assessed whether the observed associations are due to confounding by respiratory tract infections. RESULTS: Eleven observational cohort studies met the inclusion criteria. Any paracetamol use during the first trimester was related to increased risk of childhood asthma (5 studies, pooled OR=1.39, 95% CI 1.01 to 1.91) but there was marked between-study heterogeneity (I(2)=63%) and only one of these studies adjusted for maternal respiratory tract infections. Increasing frequency of use of paracetamol during infancy was associated with increased odds of childhood asthma (3 studies, pooled OR=1.15, 95% CI 1.00 to 1.31 per doubling of days exposure), but in these same three studies adjusting for respiratory tract infections reduced this association (OR=1.06, 95% CI 0.92 to 1.22). DISCUSSION: The association during early pregnancy exposure was highly variable between studies and exposure during infancy appears to be moderately confounded by respiratory tract infections. There is insufficient evidence to warrant changing guidelines on early life paracetamol exposure at this time.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Review
    
 
    
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        Herausgeber
        
    
    
        Schlagwörter
        Allergy ; Epidemiology
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2015
    
 
    
        Prepublished im Jahr 
        2014
    
 
    
        HGF-Berichtsjahr
        2014
    
 
    
    
        ISSN (print) / ISBN
        0003-9888
    
 
    
        e-ISSN
        1468-2044
    
 
    
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	    Band: 100,  
	    Heft: 1,  
	    Seiten: 81-89 
	    Artikelnummer: ,  
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            BMJ Publishing Group
        
 
        
            Verlagsort
            London
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
    
        Institut(e)
        Institute of Epidemiology (EPI)
    
 
    
        POF Topic(s)
        30503 - Chronic Diseases of the Lung and Allergies
    
 
    
        Forschungsfeld(er)
        Genetics and Epidemiology
    
 
    
        PSP-Element(e)
        G-503900-001
    
 
    
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        Erfassungsdatum
        2014-11-29