TABLE 3.
Performance of EIA/DFA versus EIA/PCR and EIA/LCR for true-negative and true-positive specimen results
| Testa | No. of samples that were:
|
Sensitivity (%) | Specificity (%) | Positive predictive value (%) | Negative predictive value (%) | Agreement with true results (%) | |||
|---|---|---|---|---|---|---|---|---|---|
| True positives | False negatives | True negatives | False positives | ||||||
| EIA/PCRb | |||||||||
| DFA | 119 | 18 | 105 | 0 | 87 | 100 | 100 | 93 | 93 |
| PCR | 129 | 8 | 105 | 0 | 94 | 100 | 100 | 93 | 97 |
| EIA/LCRc | |||||||||
| DFA | 103 | 7 | 125 | 0 | 94 | 100 | 100 | 94 | 97 |
| LCR | 109 | 1 | 115 | 10 | 99 | 92 | 92 | 99 | 95 |
a
Test to which EIA/DFA was compared.
b
Number of true-positive specimens, 137 (n = 242).
c
Number of true-positive specimens, 110 (n = 235).