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| No. of Patients with systemic envenoming | No. of Patients without systemic envenoming | Total | |
| No. of patients with abdominal pain | 31 | 3 | 34 |
| No. of patients without abdominal pain | 7 | 14 | 21 |
| Total | 38 | 17 | 55 |
* [Sensitivity –81.6%, Specificity –82.4%, Positive predictive value –91.2%, Negative predictive value –66.7%, False positives 3 (17.6%), False negatives 7 (18.4%)].
