Development of a Scale to Evaluate Patients' Compliance with Nursing Instructions and Professional Behaviors Towards Nurses: Applicability and Psychometric Assessment Study

Objective: Patient behavior in clinical settings plays a critical role in shaping care processes, communication quality, and treatment outcomes. While existing research has largely focused on adherence and patient satisfaction, there remains a lack of comprehensive instruments that capture the multidimensional nature of patient behavior within clinical interactions. This study aimed to develop and initially validate the Clinical Patient Behavior Scale (CPBS), a multidimensional instrument designed to assess patient behaviors in clinical settings based on healthcare professionals’ evaluations. Materials and Methods: This methodological study was conducted with 300 nurses working in a university hospital. An initial item pool of 30 items was generated through a comprehensive literature review and expert evaluation. Content validity was established using expert ratings. Construct validity was assessed using Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA). Internal consistency reliability was evaluated using Cronbach’s alpha coefficients. Results: The CPBS demonstrated excellent sampling adequacy (KMO = 0.939) and a significant Bartlett’s test of sphericity (p < 0.001). EFA revealed a five-factor structure explaining 73.37 % of the total variance. CFA indicated excellent model fit (CFI = 0.992, TLI = 0.991, RMSEA = 0.016). All factor loadings were statistically significant. The overall internal consistency of the 30-item scale was high (Cronbach’s alpha = 0.92). Conclusion: The CPBS provides initial evidence of a theoretically grounded and psychometrically robust instrument for assessing patient behavior as a multidimensional construct in clinical settings. The findings represent initial validation evidence, and further studies are recommended to examine cross-cultural validity, temporal stability, and external validity across diverse healthcare contexts. of BK virus in autoimmune disease pathogenesis.