Relevant Criteria for Improving Quality of Schizophrenia Spectrum Disorders Treatment: A Delphi Study

<b>Background/Objectives:</b> Schizophrenia Spectrum Disorder (SSD) represents a major challenge for healthcare systems due to its chronic nature, comorbid conditions, and high socioeconomic impact. Ensuring high-quality care for patients with SSD requires well-defined quality criteria based on consensus from healthcare professionals, patients, and caregivers. This study aims to identify and prioritize quality criteria for SSD care. <b>Methods</b>: A qualitative research approach was applied, including incorporating two focus groups-one with patients and caregivers (n = 7) and another with healthcare professionals (n = 8)-alongside the Delphi technique. The Delphi panel included 32 participants from psychiatry, primary care, mental health nursing, social work, and patient associations. The first round had an 88.9% response rate, while the second round achieved full participation (100%). The Delphi process was conducted and reported according to recommended guidelines for consensus methods (ACCORD checklist), specifying panel composition, rounds, predefined consensus thresholds, and controlled feedback between rounds. <b>Results</b>: A total of 26 quality criteria were ultimately selected, categorized into 16 identified barriers to effective care. Key priorities included early diagnosis protocols, coordinated multidisciplinary care, and improved access to specialized mental health services. <b>Conclusions</b>: The findings underscore the necessity of integrating patient experience into healthcare evaluation and highlight the potential for implementing a certification system to standardize SSD care across healthcare settings.