Observer 2    
    + -    
Observer 1 + 3 0 3 5.88%
- 32 16 48 94.12%
    35 16 51  
    Actual agreement= 37.25%  
    Chance agreement= 33.56%  
    Kappa statistic= 0.06  
Table 5: Agreement detected between positive H. pylori –DNA (PCR) in BMA and severe ITP.
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