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Table 2 Risk-of-bias summary of randomized clinical trials

From: Meta-analysis of studies comparing conservative treatment with antibiotics and appendectomy for acute appendicitis in the adult

Reference

Styrud J 2006

Hansson J 2009

Vons C 2011

Mentula P 2015

Salminen P 2015

Random sequence generation

+

+

+

+

+

Allocation concealment

+

+

+

+

+

Blinding of participants and personnel

Blinding of outcome assessment

+

+

+

+

Incomplete outcome data

+

+

+

/

Selective reporting

/

/

/

/

/

Other bias

/

/

/

/

/

  1. +: low risk of bias
  2. -: high risk of bias
  3. /: unclear risk of bias