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Purpose: This study examined reliability and validity of the researcher-developed 17-item Evidence-Based Practice Self-efficacy (EBPSE) scale.
Design: A quasi-experimental, pretest/posttest design with comparison group was applied.
Setting: Setting included inpatient, ambulatory, long-term care, and hospice units from a large US academic medical center and affiliated sites (n = 14).
Sample: Two cohorts of staff (26%) and leadership nurses (74%) participated in a 1-year educational program on clinical informatics and evidence-based practice (EBP) (cohort 1, n = 53, 2007-2008; cohort 2, n = 40, 2008-2009).
Methods: The EBPSE scale involves a 1% to 100% response scale, with higher scores indicating greater self-efficacy. Both cohorts completed the EBPSE scale at baseline (time 1) and after the clinical informatics content (time 2); cohort 1 also completed the scale at program completion after delivery of EBP content (time 3). Analysis included descriptive and inferential statistics.
Findings: Missing data ranged from 10% to 17% for participants at time 2 and 43% for cohort 1 at time 3. Cronbach [alpha] coefficients ranged from .95 to .98 across time and cohorts. Baseline and time 2 average EBPSE scale scores did not differ between cohorts. Average scores increased significantly (P < .01) from time 1 to time 2 (all participants) and time 2 to time 3 (cohort 1).
Conclusions: Findings suggest promise for the EBPSE scale as a measure of EBPSE and target for practice improvements. Further study is needed with a larger small sample and less attrition.
Implications: The EBPSE scale may foster leading EBP and mentoring nursing staff.
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