Table 3 Sensitivity, specificity, PPV, and NPV by PIMA and FACSPresto
From: Assessment of two POC technologies for CD4 count in Morocco
Technique | CD4 threshold (cells/µl) | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95%CI) | Upward misclassification (95% CI) | Downward misclassification (95% CI) |
|---|---|---|---|---|---|---|---|
PIMA | 350 | 88.57% (73.26–96.80) | 94.12% (83.76–98.77) | 91.18% (77.40–96.89) | 92.31% (82.46–96.80) | 8.57% (1.80–23.10) | 7.84% (2.20–18.90) |
200 | 83,33% (58.58–96.42) | 98.53% (92.08–99.96) | 93.75% (67.95–99.07) | 95.71% (88.82–98.43) | 5.56% (0.10–27.30) | 4.41% (0.90–12.40) | |
FACSPresto | 350 | 88.23% (72.55–96.70) | 96.23% (87.02–99.54) | 93.75% (79.30–98.33) | 92.73% (83.53–96.98) | 5.88% (0.70-19.70) | 7.54% (2.10–18.20) |
200 | 82.35% (56.57–96.20) | 98.57% (92.30–99.96) | 88.57% (66.39–99.00) | 95.83 (89.17–98.47) | 5.88% (0.10–28.70) | 4.29% (0.90–12.00) |