Which KPI is commonly used to evaluate SOP effectiveness?

• A. Deviation rate
• B. Audit findings
• C. Compliance rate
• D. Training completion rate

Answer: (C)

The main idea tested is whether staff actually follow the documented procedures in day-to-day work. Compliance rate is the best choice because it directly measures how often tasks are performed in accordance with the SOPs, linking the written procedures to real practice. A high compliance rate indicates the SOPs are understood, accessible, and effectively enforced, reflecting true SOP effectiveness and the impact of training and controls. If compliance is low, it points to issues in clarity, access, or enforcement that require improvement. Other metrics offer useful insights but are more indirect: deviation rate focuses on how often steps break from the SOP, audit findings show issues found during reviews, and training completion rate confirms who finished training but not whether the procedures are actually followed in practice.