Scoping Review: Association of Inpatient Hospital Design Features With Patients' Clinical Outcomes.

Objective: To identify associations between inpatient hospital design features and empirical patient clinical outcomes as well as changes over time. Background: A growing body of literature has emerged evaluating the association of hospital design features with measurable clinical outcomes during inpatient hospital admissions. However, there has been limited effort to evaluate the scope and quality of studies examining individual, inpatient hospital design features on empirical patient clinical outcomes. Methods: Primary research articles published in English between 1980 and 2021 evaluating inpatient clinical outcomes were included. Key terms for hospital designs and clinical outcomes were used. Ovid Medline, Embase, CINAHL, Web of Science, Scopus, Cochrane Library, Elsevier Embase, and Google Scholar were searched on May 28, 2021. Data were independently extracted by two authors, with arbitration from the third author. Results: Forty-six research articles were included for analysis. Predominantly studied inpatient hospital design features included: single versus multibedded rooms/wards, windows, furnishings, installed lighting, ward size and spatial arrangement, noise level, air ventilation, and patient visibility. Although nearly half (43%) of the articles lack appropriate methods to account for residual confounding, a trend of improvement in the use of appropriate methods was identified with 68% of studies in the last decade having appropriate methods. Studies demonstrating positive associations were more likely to be cited than those with negative associations (average citation per article, 508 vs. 27). Conclusion: Our study demonstrates the use of empirical patient clinical outcomes as a feasible approach to evaluate hospital design features, and identified an incremental improvement in the methods being applied.