Revision and Psychometric Testing of the Safe Administration of Medications Scale.
OBJECTIVE
This study describes revision and psychometric testing of the Safe Administration of Medications-Revised (SAM-R) scale.


METHODS
The SAM-R scale was revised and tested to assess Bachelor of Science in Nursing (BSN) students' readiness to safely deliver medications through simulated case studies and associated vignettes. Subjects were junior- and senior-level BSN students (N = 227) from a large Midwestern university. Both classical testing and item response theory (IRT) were used to analyze item and group results.


RESULTS
Face, content, and construct validity were assessed. Internal consistency reliability of the scale was .736. IRT provided item-level information, using a one-parameter logistic model, but the sample size was inadequate for testing more complex models.


CONCLUSIONS
Evidence was obtained for reliability, face, content, and construct validity. Further revisions, and a larger sample size, are warranted.
University of Nebraska Medical Center, Omaha, USA.
Katherine S
KS
Bravo
Bunny
B
Pozehl
Kevin
K
Kupzyk
D004508:Education, Nursing, Baccalaureate; D004521:Educational Measurement / Q000592:standards; D006801:Humans; D009329:Nebraska; D057184:Practice Patterns, Nurses'; D011594:Psychometrics / Q000592:standards*; D015203:Reproducibility of Results; D013338:Students, Nursing / Q000523:psychology*