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Table 1 Study scoring data abstraction form used to score all original studies independently

From: Enteral glutamine supplementation in critically ill patients: a systematic review and meta-analysis

  Score
0 1 2
Randomization Not concealed or not sure Concealed randomization
Analysis Other Intention to treat
Blinding Not blinded Single-blind Double-blind
Patient selection Selected patients or unable to tell Consecutive eligible patients
Comparability of groups at baseline No or not sure Yes
Extent of follow-up <100 % 100 %
Treatment protocol Poorly described Reproducibly described
Cointerventions Not described Described but not equal or not sure Well described and all equal
Outcomes Not described Partially described Objectively defined