What are the minimum criteria for serial measurements of peak flow to maintain a high degree of diagnostic accuracy?
 
 
  
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    The diagnostic performance of serial peak flow measurements falls when fewer than four readings a day are made.
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   This statement is in the "Diagnosis of an affected worker"
   section of evidence linked statements
 
 
 
  Evidence
 
   
    Malo JL, Cote J, Cartier A, Boulet LP, L'Archeveque J, ChanYeung M
    , 
     How Many Times Per Day Should Peak Expiratory Flow Rates Be Assessed When Investigating Occupational Asthma?
    ,
    Thorax
    ,
    1993
    ;
    48
    :
    1211-1217
   
  
 
	
  
   Principal reccomendations
  
   This statement supports the following principal reccomendations
  
   View the principal reccomendations
  
  
    
     
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       Health practitioners who suspect a worker of having occupational asthma should arrange for workers to perform serial peak flow measurements at least four times a day.
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