Impact of Individual and Job Characteristics on Nurses' Scope of Practice in Spanish Hospital Units.

Background: Nurses are one of the largest and costliest groups in healthcare organizations; therefore, it is important to comprehend their scope of practice. Aim: To contribute to the improvement of nursing resource management in medical-surgical and Intensive Care Units by identifying factors that influence the scope of nursing practice. The hypothesis was that the activities carried out by nurses in medical-surgical units and intensive care units are influenced by individual and job-related factors, with job characteristics having an additive and moderating effect on individual characteristics. Materials and Methods: Cross-sectional correlational design to test the relationship between the individual and job characteristics on the nursing scope of practice measured by the Actual Scope of Nursing Practice (ASCOP) questionnaire. The sample consisted of 270 nurses. Linear mixed effects models analysis (LME) was used with the aleatory effect of the intensive care unit (ICU). Results: Belonging to the ICU decreased the scope of practice of nurses. We found a statistically significant effect of psychological demand, practice environment, role ambiguity, and growth need strength on the scope of nursing practice. The models explained a variance up to 24%. Conclusions: Although the survey results revealed the existence of broader scope of practice levels in Spanish hospital units than in the original Canadian study, the use of scope of nursing practice remains suboptimal. Higher levels on the psychological demand, the practice environment and in the individual growth need strength were related with a broader scope of practice. Otherwise, role ambiguity negatively affected the scope of practice.