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Table 5 Potential consequences of alternative prescriptive strategies

From: Predicting late anemia in critical illness

Strategy Number not developing late anemia (n = 4,136) Number developing late anemia (n = 1,034) Predictive strength
  Not treated Treated Not treated Treated Sensitivity Specificity PPV NPV
Corwina 2,666 1,470 234 800 0.77 0.65 0.35 0.92
Broad-basedb 0 4,136 0 1,034 1.00 0 0.20 Undefined
  1. Late anemia, reached or would have reached 7.0 g/dl at 7 days or more after admission to intensive care unit. NPV, negative predictive value; PPV, positive predictive value. aPatients were treated on the basis of clinical trial inclusion criteria in reference [5]. bStrategy in which all patients are treated.