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Table 5 Evaluation of scientific evidence of nurse-requested x-ray according to GRADE.

From: A systematic review of triage-related interventions to improve patient flow in emergency departments

Outcome measures Number of patients (number of studies) Study design Outcome*, median (min-max) Scientific evidence according to GRADE Comments
Waiting time and/or length of stay
2 682
3 studies
RCT 10 (6-37)
Downgraded because of study quality, low reproducibility and heterogeneity
  1. * Outcome calculated as the difference between intervention and control. Because of low numbers, waiting time and length of stay have been grouped together.