Mathematics Anxiety and Mathematics Self-efficacy in Relation to Medication Calculation Performance in Nurses Page: 84
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found Cronbach's alpha for the entire scale to be 0.88, for the confidence in application to
nursing practice to be 0.90, and for confidence in arithmetic to be 0.87. This study's results are
similar. The reliability of the NSE-math scale for this study was calculated using the Cronbach
alpha for the entire scale, 0.83; for confidence in arithmetic concepts, 0.90; and for confidence in
application to mathematics to nursing practice, 0.83. The two factors and the full NSE scale
delineated comparable correlations.
The last instrument is the Bayne-Bindler Medication Calculation Test (BB), a 20-item
fill-in-the-blank medication calculation test, used to measure medication calculation performance
(Bayne & Bindler, 1984). The questions are a mixture of oral, injectable, and IV calculations,
which may influence the reliability score. Some items are simple and take no conversions while
other items require more than one calculation or conversion and the answer may involve
decimals. The test had been updated for current dosage forms and conversions, which may relate
to the lower reliability score. The modified BB medication calculation test for this study had a
Cronbach alpha of 0.64. The BB Cronbach alpha was analyzed and recalculated multiple times,
eliminating individual items from the test or groups of items with no increase in the reliability
score. A moderate Cronbach alpha value greater than 0.60 is common in exploratory research,
but an alpha greater than 0.70 would be better (Garson, 2011; Tan, 2009). Further research is
recommended using the BB medication calculation test to refine the items and standardize the
test for further use with nurses and nursing students.
Data not established on whether a specific type of questions might be predictive of
calculation performance, drug administration safety, critical thinking capacity, mathematic
anxiety levels, and/or mathematic self-efficacy; the test was used in total and not divided. Further
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Melius, Joyce. Mathematics Anxiety and Mathematics Self-efficacy in Relation to Medication Calculation Performance in Nurses, dissertation, May 2012; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc115119/m1/92/: accessed June 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .