What is the purpose of balancing measures in a QI project?

• A. To measure the primary outcome only
• B. To ensure improvement in the primary metric does not cause new problems
• C. To replace the primary metric
• D. To measure financial cost only

Answer: (B)

Balancing measures are used in quality improvement to detect unintended consequences of changes aimed at improving a process. They help ensure that gains in the primary metric don’t create new problems elsewhere, such as safety, patient experience, or costs. By tracking these side effects alongside the main outcome, you can confirm that the overall system is truly improving and adjust the intervention if trade-offs appear. For example, shortening length of stay might reduce the primary metric but could increase readmissions or patient dissatisfaction, and a balancing measure would reveal that issue so you can respond. This is why the option describing balancing measures as a check against negative side effects is the best fit; they are not about measuring only the primary outcome, replacing it, or focusing only on cost.