Reviewing the Control Chart DataThe control chart shows"Events/Bed Day" over time, with the Upper Control Limit (UCL), Lower Control Limit (LCL), and a center line (CL) marking the baseline average of the process before the intervention.

Identifying the Impact of the New Process

The intervention to reduce events per bed day was implemented on January 7.

Following this date, there is a noticeable and consistent decrease in the number of events per bed day, with data points gradually moving downward.

Eventually, the values settle well below the original center line, indicating a decreasing shift in the process.

Differentiating Between Trends and Shifts

A shift is characterized by a sustained change in process level, often due to a successful intervention, as seen here with lower event rates maintained over time.

In this case, the shift is in a favorable direction, as the targeted events per bed day have reduced significantly and consistently.

A trend would indicate a continuous movement in a direction, but this chart shows that after an initial decline, the process stabilizes at a lower rate.

ConclusionSince the process has demonstrated a decreasing shift, indicating improvement and reduced events per bed day, the correct recommendation is to continue the process, as it appears successful in achieving the goal.