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Table 1 Measures of case management success

From: Composite endpoints for malaria case-management: not simplifying the picture?

  True status  
How managed Positive Negative Total
  Treated a c a+c
  Not treated b d b+d
  Total a+b c+d N
Prevalence (a+b)/N
Positive management rate (PMR) a/(a+b)
Negative management rate (NMR) d/(c+d)
Combined management rate (CMR) (a+d)/N OR
  PMR*p+NMR*(1-p)
Predictive values  
% positive among treated a/(a+c)
% negative among not treated d/(b+d)