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Fig. 1 | BMC Medical Research Methodology

Fig. 1

From: Comparison of statistical models for estimating intervention effects based on time-to-recurrent-event in stepped wedge cluster randomized trial using open cohort design

Fig. 1

Schematic representation of the actual example. White cells correspond to the periods during which the residents received the standard-of-care (control condition), and grey cells correspond to periods during which the residents received new interventions (intervention condition). Each cluster \({C}_{1}\) to \({C}_{5}\) contains two or three facilities, and one cluster moves from the control condition to the intervention condition in Steps 1 to 5. The duration for one Step (between one Step and the next) is two months, and the time period \({T}_{0}\) to \({T}_{8}\) is also every two months. The duration between \({T}_{8}\) and \({T}_{8.5}\) is one month. The start of the trial is \({T}_{0}\), and after \({T}_{6}\), which is the end of the last step period, there is a follow-up period for 5 months until \({T}_{8.5}\) (equivalent to 2.5 Steps)

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