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The novice objective structured clinical evaluation tool: psychometric testing
Mireille Walsh1, Patricia Hill Bailey, Sharolyn Mossey
1School of Nursing, Northern College of Applied Arts and Technology, Timmins, Ontario, Canada. walshm@northern.on.ca
Aim:
This paper is a report of a study of the psychometric properties of the Novice Objective Structured Clinical Evaluation Tool.
Background:
A collaborative undergraduate nursing programme is currently using an objective structured clinical evaluation at the conclusion of the first nursing clinical course to determine student competence as a component of quality and safety education. However, the reliability and validity of the assessment tool has not been established.
Methods:
Psychometric testing was conducted with a convenience sample of 565 nursing students. Data were collected during three consecutive years from 2002 to 2004. Exploratory factor analysis and reliability testing were conducted on this 25-item tool.
Results:
Principal axis factoring method identified two factors through the orthogonal, oblimin and promax rotations: Factor 1 Safety and Factor 2, Anticipation. Spearman-Brown's result for Factor 1 was 0·93 and for Factor 2 was 0·77. Cronbach's alpha was.94 for Factor 1 and 0·71 for Factor 2.
Conclusion:
The tool was found to have adequate construct validity and reliability. Its stability should be tested by conducting test-retest analysis. Equivalency dimensions of reliability should be evaluated by looking at interrater reliability. This tool shows merit for assessing elements of quality and safety education.
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