Assessment of Risk Factors Associated With Hospital-Acquired Pressure Injuries and Impact on Health Care Utilization and Cost Outcomes in US Hospitals

Hospital-acquired pressure injuries (HAPI) are a societal burden and considered potentially preventable. Data on risk factors and HAPI burden are important for effective prevention initiatives. This study of the 2009-2014 US Premier Healthcare Database identified HAPI risk factors and compared outcomes after matching HAPI to non-HAPI patients. The cumulative incidence of HAPI was 0.28% (47365 HAPI among 16967687 total adult inpatients). Among the matched sample of 110808 patients (27702 HAPI), the strongest risk factors for HAPI were prior PI (odds ratio [OR] = 12.52, 95% confidence interval [CI] = 11.93-13.15), prior diabetic foot ulcer (OR = 3.43, 95% CI = 3.20-3.68), and malnutrition (OR = 3.11, 95% CI = 3.02-3.20). HAPI patients had longer adjusted length of stay (3.7 days, P < .0001), higher total hospitalization cost ($8014, P < .0001), and greater odds of readmissions through 180 days (OR = 1.60, 95% CI = 1.55-1.65). This study demonstrates how big data may help quantify HAPI burden and improve internal hospital processes by identifying high-risk patients and informing best practices for prevention.