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Table 2 An example core outcome set (COS) [11]

From: Ensuring young voices are heard in core outcome set development: international workshops with 70 children and young people

The minimum outcomes to measure and report for studies investigating treatment of uncomplicated acute appendicitis in children and young people [11]

• Bowel obstruction

• Wound infection

• Wound complication

• Negative appendicectomy

• Recurrent appendicitis

• Intra-abdominal abscess

• Antibiotic failure

• Child’s quality of life

• Patient stress / psychological distress

• Time away from full activity

• Length of hospital stay

• Readmission to hospital

• Reoperation (including interventional radiology procedure)

• Death