Mathematics Anxiety and Mathematics Self-efficacy in Relation to Medication Calculation Performance in Nurses Page: 83
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Three instruments were used in this research, the Mathematics Anxiety Scale (MAS) (Bai
et al., 2009), the Nurse Self-Efficacy for Math (NSE-math) (Andrew et al., 2009), and the
Bayne-Bindler Medication Calculation Test (BB) (Bayne & Bindler, 1984). Instrument
parameters are illustrated in Table 11. The instrument reliability analysis is discussed in this
Measurement Tools Descriptions and Reliability
Measurement Number Range of Scale Cronbach
tools of items possible a
MAS 13 14-65 1-5 scale, beginning with strongly .92
disagree to strongly agree
NSE-math 12 12-120 1-10 scale, beginning with no .82
confidence at all to complete confidence
BB 20 0-20 One point per item answered correct .64
MAS Mathematics Anxiety Scale; NSE Nurse Self-Efficacy for Mathematics; BB Bayne-Bindler medication
The first instrument is the 14-item tool, the Mathematics Anxiety Scale (MAS), used to
measure mathematics anxiety (Bai et al., 2009). One of the items (no. 3) about which Bai et al.
reported a low item-total correlation score (r=0.31) had an even lower (r=0.165) item-total
correlation in this study. Since the Cronbach alpha improved only slightly for total score from
0.918 to 0.924 the scale was left intact. Comparisons were made between the positive, negative,
and total MAS scales, there was no appreciable differences in using the two dimensions,
therefore the scale was use in total.
The next instrument, Nurse Self-Efficacy for Math (NSE-math), is a 12-item scale
describing a nurse's confidence in accomplishing mathematic and arithmetic tasks related to
medication calculations and common math problems (Andrew et al., 2009). Andrew et al. (2009)
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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/m1/91/: accessed March 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .