Abstract 510 Table 1

Author, year, locationCriteriaSurgery group (N)Antibiotic group (N)Overall failure antibioticHospital stay, surgeryHospital stay, antibiotic
Mahida J, 2016
United States
7–17 y
<48 hours of abdominal pain
WBC<18,000/L
CT diagnosis
9 5 60% (at 4.7 months f/u Study halted when 60% failed in antibiotic group
Minneci P, 2016
United States
7–17 y
<48 hours of abdominal pain
WBC<18,000/L
CT diagnosis, Excluded fecalith
65 37 24.3% at 1 year f/u 20 hours 30 hours
Svensson J, 2015
Sweden
5–15 y
Clinical and ultrasound/CT diagnosis
26 24 37.5% at 1 yr f/u 34.5 hours 51.5 hours
Tanaka Y, 2015
Japan
6–16 y
Clinical and ultrasound or CT diagnosis
86 78 28.6% at 4.5 yr f/u 6.5 days 6.6 days
Armstrong J, 2014
Canada
<18 y
<48 hours symptoms
Clinical Diagnosis and/or CT
12 12 25% at 7 months f/u 1.3 days 1.5 days
Hartwich J, 2016
United States
5–15 y
<48 hours symptoms and/or CT diagnosis
50 24 29% at 2 months f/u 24 hours =