A national quality improvement initiative cut missed radiotherapy appointments, crucial for optimizing cancer care.

• Patient no-show rates dropped by 39.8% (from 8.3% to 5.0%).
• Program-level no-show rates decreased by 31.7% (from 8.2% to 5.6%).

Addressing barriers like transportation (62.3%) and unrelated patient illness (37.1%) improved adherence.

• Effective interventions included developing workflows (68.9%) and creating internal resources (54.3%).