Screening method | Mean sensitivity, % (95% CI) | Mean specificity, % (95% CI) | Positive predictive value, % (95% CI) | Negative predictive value,% (95% CI) | Diagnostic accuracy, % (95% CI) | True +ve (n) | False + ve (n) | True –ve (n) | False -ve(n) |
---|---|---|---|---|---|---|---|---|---|
MCV + MCH only | 96.04 (92.64–97.9) | 59.76 (57.37–62.17) | 24.72 (21.98–27.67) | 99.1 (98.29–99.52) | 64.14 (61.95–66.28) | 218 | 664 | 986 | 9 |
Hb electrophoresis | 99.55 (97.51–99.92) | 99.7 (99.29–99.87) | 97.81 (94.97–99.06) | 99.94 (99.66–99.99) | 99.68 (99.3–99.85) | 223 | 05 | 1648 | 01 |
MCV+ MCH and Hb Electrophoresis | 99.55 (97.51–99.92) | 99.82 (99.47–99.94) | 98.67 (96.17–99.55) | 99.94 (99.52–99.96) | 99.79 (99.66–99.99) | 223 | 03 | 1650 | 01 |