Table 2.
Sensitivity and specificity of anti-H. pylori IgG antibody test for Egyptian children, by cutoff point
| Cutoff (U/ml) | Sensitivity (95% CI) | Specificity (95% CI) | LR+ (95% CI) | LR- (95% CI) |
|---|---|---|---|---|
| 3 | 99.1 [0.922-0.999] | 98.9 [0.899-0.999] | 86.243 [5.481-135.11] | 0.009 [0.001-0.139] |
| 4 | 99.1 [0.922-0.999] | 85.3 [0.622-0.719] | 80,136 [0.969-1.115] | 0.187 [0.009-4.042] |
| 5 | 99.1 [0.922-0.999] | 87.9 [0.722-0.819] | 54.345 [1.14-1.659] | 0.031 [0.002-0.513] |
| 6 | 98.2 [0.907-0.997] | 86.3 [0.625-0.711] | 1.837 [1.387-2.432] | 0.038 [0.005-0.27] |
| 7-9 | 96.5 [0.881-0.99] | 93 [0.814-0.976] | 13.83 [4.638-41.239] | 0.038 [0.01-0.148] |
| 10 | 96.5 [0.881-0.99] | 93 [0.814-0.976] | 13.83 [4.638-41.239] | 0.038 [0.01-0.148] |
| 11 | 82.5 [0.706-0.902] | 95.3 [0.845-0.987] | 17.728 [4.557-68.974] | 0.184 [0.104-0.324] |
LR = likelihood ratio.