Outcome indicators measure the results of care, such as patient health status or complications, distinct from process (actions taken) or structure (resources) indicators.

Option A (Utilization of CT scan for low back pain): This is a process indicator, measuring the frequency of a procedure.

Option B (Contrast-induced complications): This is the correct answer. The NAHQ CPHQ study guide states, “Outcome indicators reflect the impact of care, such as complications like contrast-induced nephropathy in radiology” (Domain 2).

Option C (Mammography result turnaround time): This is a process indicator, measuring efficiency.

Option D ("Time-out" performed for interventional cases): This is a process indicator, measuring adherence to safety protocols.

CPHQ Objective Reference: Domain 2: Health Data Analytics, Objective 2.1, “Classify quality indicators,” emphasizes outcome indicators for care results. The NAHQ study guide notes, “Complications are key outcome measures in radiology” (Domain 2).

Rationale: Contrast-induced complications directly measure patient outcomes, aligning with CPHQ’s analytics principles.