Figure:

TRACTION Trial Study Design

This figure shows the design of the TRACTION trial. Phase 1 was the cluster randomized controlled clinical trial comparing the Learning Collaborative intervention with a wait-list control group. Phase 2 provided the Learning Collaborative intervention to the Phase 1 control group while the Phase 1 intervention group is observed. The current paper compares the same six Control sites during Phase 1 to Phase 2 (outlined with the black box), with respect to adverse events and resource utilization.