ition.  ![](pone.0000000.t000){#pone-0000000-t000-0}    Characteristics                                                                                       OR        00% CI         p   --------------------------------------------------------------------------------------------------- ------- -------------- ---------   Abnormal mental status                                                                               0.00     0.00--0.00     0.000   Children with vomiting                                                                               0.00     0.00--0.00     0.000   Clinical dehydration (some/severe)                                                                   0.00    0.00--00.00     0.000   Abdominal distension                                                                                 0.00    0.00--00.00     0.000   Presence of hypoxemia                                                                                00.00   0.00--000.00   \<0.000   Systolic hypotension (\<00 mm of Hg) after