| Study | TP | FP | FN | TN | Sensitivity | Specificity |
| Ben Ali et al., 2009 [20] | 39 | 17 | 348 | 271 | 0.10 0.07, 0.14 | 0.94 0.91, 0.97 | Ereqat et al., 2009 [19] | 15 | 8 | 106 | 73 | 0.12 0.07, 0.20 | 0.90 0.81, 0.96 | Ghoussaini et al., 2005 [17] | 243 | 133 | 857 | 478 | 0.22 0.20, 0.25 | 0.78 0.75, 0.81 | Ghoussaini et al., 2005 [17] | 92 | 39 | 304 | 156 | 0.23 0.19, 0.28 | 0.80 0.74, 0.85 | Oh et al., 2000 [1] | 8 | 10 | 103 | 108 | 0.07 0.03, 0.14 | 0.92 0.85, 0.96 | González Sánchez et al., 2002 [18] | 26 | 53 | 314 | 156 | 0.08 0.05, 0.11 | 0.75 0.68, 0.80 |
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