Table 2 A 2 × 2 contingency table showing the performance characteristics PIMA POC at the ≤ 200 CD4 cells/µl threshold for HIV using the results of the BD facscalibur as the reference.

From: Evaluation of point-of-care Alere Pima CD4 test for low CD4 cell counts test in Uganda

  

FACSCalibur (flowcytometry)

  

≤ 200 cells/µL

> 200 cells/µL

PIMA POC

≤ 200 cells/µL

5

2

7

PPV (71.43), LHR+(28.06)

> 200 cells/µL

4

99

103

NPV (96.12), LHR-(0.45)

9

101

110

 

Sensitivity (55.56%)

Specificity (98.02%)

  
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