Objective Out-patient waiting times pose a significant challenge for public patients in need of specialist evaluation and intervention. The aim of the present study was to identify and categorise effective strategies to reduce waiting times for specialist out-patient services with a focus on the Australian healthcare system. Methods A systematic review of major health databases was conducted using the key terms 'outpatient*' AND 'waiting time', 'process*' AND 'improvement in outpatient clinics'. Identified articles were assessed for their relevance by sequential review of the title, abstract and full text. References of the selected manuscripts were scanned for additional relevant articles. Selected articles were evaluated for consistent and emerging themes. Results In all, 152 articles were screened, of which 38 were included in the present review. Numerous strategies identified in the articles were consolidated into 26 consistent approaches. Three overarching themes were identified as significantly affecting waiting times: resource realignment, operational efficiency and process improvement. Conclusions Strategies to align resources, increase operational efficiency and improve processes provide a comprehensive approach that may reduce out-patient waiting times. What is known about the topic? Out-patient waiting times are a challenge in most countries that seek to provide universal access to health care for all citizens. Although there has been extensive research in this area, many patients still experience extensive delays accessing specialist care, particularly in the public health sector. The multiple factors that contribute to bottlenecks and inefficiencies in the referral process and affect patient waiting times are often poorly understood. What does this paper add? This paper reviews the published healthcare literature to identify strategies that affect specialist out-patient waiting times for patients. The findings suggest that there are numerous operational strategies that affect waiting times. These strategies may be categorised into three overarching themes (resource alignment, operational efficiencies and out-patient processes) that, when actioned in a coordinated approach, have the potential to significantly reduce out-patient waiting times. What are the implications for practitioners? This paper identifies evidence-based strategies for aligning resources, improving operational efficiency and streamlining processes, which may provide improvements to specialist out-patient waiting times for patients. Addressing the identified organisational, person-related, cultural and attitudinal factors will assist health system managers and health practitioners target the most appropriate improvement activities to reduce waiting times.

The delivery of public out-patient services is an essential part of complex healthcare systems, but the contribution of public out-patient services is often ill defined and poorly evaluated. The aim of this study was to identify and better understand those factors that may affect the performance of out-patient services to provide health service managers, clinicians and executives with a conceptual framework for future decision-making processes. The present qualitative research involved five exploratory case studies. These case studies were conducted across two specialties at hospitals in the Metro North Hospital and Health Service in Queensland. Data were obtained from 38 interviews and 15 focus groups, and were analysed to identify common themes. Further analysis helped identify the most significant factors and build a conceptual framework for understanding the relationships between those factors and their effect on performance. Across both specialties there were 10 factors (scheduling, performance, service framework, categorisation or prioritisation of patients, internal and external stakeholders, resources, service demand, culture, system challenges and medical stakeholders) identified that may affect the performance of out-patient services. These factors were condensed into five core domains: culture, stakeholders, resources, demand and system reform. Strategies to address the five core domains identified may provide a framework for sustainable improvement in the delivery of out-patient services. The provision of specialist out-patient services is an essential element of health service delivery. Access to specialist services in the public sector is challenging because of the escalating demand associated with an increasing and aging demographic. The factors that may affect the delivery of out-patient services need to be addressed for long-term sustainable improvement. This paper provides a conceptual framework grounded in rigorous qualitative data analysis for understanding the internal and external factors that affect waiting times for specialist out-patient services. The results of this qualitative research indicate that there are five core domains that may influence waiting times in the public out-patient setting. When these domains are addressed at the strategic, tactical and operational levels, they have the potential to provide significant improvement in the delivery of out-patient services. This paper guides the attention of relevant stakeholders towards the five core domains identified (culture, stakeholders, resources, demand and system reform) that influence the performance of waiting times at the operational, tactical and strategic levels within the public hospital setting.

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