Risk Factors for Pressure Injuries and Injury Types Among Inpatients in Multi‐Centre Military Hospitals: A Factor Analysis Study

Pressure injuries remain a significant concern in military hospital settings, leading to increased morbidity and healthcare costs. Understanding the interplay of multiple risk factors is critical for effective prevention. To identify key risk factors and their combined effects on pressure injury development among inpatients in multi-centre military hospitals using factor analysis. A cross-sectional study was conducted involving 4876 inpatients across multiple military hospitals. Data were collected on 15 potential risk factors, including incontinence, care dependency, mobility limitations, comorbidities, medication use, nutritional status, and demographics. Factor analysis with principal component analysis and varimax rotation was applied, and maximum canonical correlation coefficients were calculated to evaluate the predictive contribution of single and combined factors. Single-factor analysis identified incontinence as the strongest predictor (MaxCanonicalCorr = 0.50126), followed by care dependency (0.31982) and bedridden status (0.30061). Two-factor analysis revealed incontinence combined with care dependency as the highest-performing model (MaxCanonicalCorr = 0.50867). Three-factor models incorporating incontinence, health conditions, and care dependency achieved the greatest predictive capacity (MaxCanonicalCorr = 0.5157), demonstrating that multi-factor interactions enhance risk prediction beyond single-factor effects. Incontinence is the primary modifiable risk factor for pressure injury in military hospital inpatients. Integrating continence management with assessments of functional status and comorbidities can improve early identification of high-risk patients and guide targeted preventive strategies.