Health Services Research Versus Quality Improvement
Health services research (HSR) and quality improvement (QI) share the goal of improving healthcare, but they differ in their methods, intent, and regulatory requirements. Understanding these differences is relevant for both the CPHQ exam and daily practice.
Defining Health Services Research
Health services research is a multidisciplinary field that examines how social factors, financing systems, organizational structures, health technologies, and personal behaviors affect access to healthcare, the quality of care, and health outcomes. HSR uses rigorous scientific methods to produce generalizable knowledge. It typically involves hypothesis testing, controlled study designs, and statistical analysis intended for publication and broad application.
Defining Quality Improvement
Quality improvement focuses on making changes to processes within a specific healthcare setting to achieve better outcomes. QI uses iterative methods such as PDSA cycles, Lean, and Six Sigma to test and implement changes. The primary audience for QI work is internal stakeholders, although findings may be shared externally. QI projects are designed to address local problems using local data and context.
Key Differences
The most significant difference is intent. HSR aims to generate new knowledge for the broader scientific community, while QI aims to improve care within a specific organization. HSR typically uses randomized controlled trials, cohort studies, or other formal research designs. QI uses rapid-cycle testing and real-time data to guide iterative changes. HSR requires IRB approval, while most QI projects do not. HSR findings are intended to be generalizable, while QI results are context-specific.
Where They Overlap
Despite their differences, HSR and QI increasingly intersect. Implementation science bridges the gap by studying how evidence-based practices are adopted in real-world settings. Some projects combine HSR rigor with QI practicality, using research methods to evaluate QI interventions. Quality professionals benefit from understanding HSR methods, as they can strengthen the rigor and credibility of QI work.
Implications for Quality Professionals
Quality professionals should be able to distinguish between HSR and QI to determine appropriate oversight, methodology, and reporting standards. When QI projects produce findings that could contribute to generalizable knowledge, consult with your IRB to determine whether the project has crossed into research territory. This distinction is tested on the CPHQ exam and has practical implications for project planning and publication.