Fig. 1From: Protocol for a multi-centered, stepped wedge, cluster randomized controlled trial of the de-adoption of oral chlorhexidine prophylaxis and implementation of an oral care bundle for mechanically ventilated critically ill patients: the CHORAL studyStepped-wedge schedule of the CHORAL study. Clusters sequentially cross over from control phase to intervention phase. Observational data collection is depicted during control (plus sign) and intervention (asterisks) periodsBack to article page