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Table 1 Stepped wedge design with four steps in which ‘C’ represents the control situation and ‘I’ represents the intervention phase

From: Improving the implementation of perioperative safety guidelines using a multifaceted intervention approach: protocol of the IMPROVE study, a stepped wedge cluster randomized trial

Group Measurement
  T0 T1 T2 T3
1 C I I I
2 C C I I
3 C C C I