ABSTRACT Aim This study was conducted to evaluate the validity, reliability and psychometric properties of the Polish version of the Medication Safety Scale among intensive care nurses. Design This is a methodological and psychometric study. Background Healthcare environments are particularly prone to medication errors, making it crucial to implement strategies to prevent them. Methods The study group included 341 nurses working in adult critical care in Poland. Data were collected from March to November 2022 using convenience sampling. The scale included a total of 45 items divided into five factors (working conditions, individual factors, systemic factors, drug administration and drug knowledge). Single‐choice response options were structured using a 5‐point Likert scale. A forward–backward translation process with monolingual testing was conducted. Psychometric validity was then assessed: Confirmatory factor analysis (CFA) was performed to evaluate the questionnaire's structure, with diagonally weighted least squares (DWLS) used as the estimation method. Subscale reliability was assessed using McDonald's ω, Cronbach's α and composite reliability (CR). Convergent validity was examined using the average variance extracted (AVE). Results Factor analysis confirmed that the five‐factor model was suitable for the data. The analysis confirmed the reliability of the subscales (McDonald's ω = 0.910 to 0.946, Cronbach's α = 0.907 to 0.943, CR = 0.931 to 0.965) and convergent accuracy (AVE = 0.538 to 0.932). Conclusions The Polish version of the Medication Safety Scale can be applied as a valid and reliable measurement instrument for assessing medication safety among intensive care nurses.
Lis et al. (2026) studied this question.