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| Reliability and validity of virtual simulation teaching scale in evaluation of Harvey simulation teaching |
| GUO Kai, XU Chenhua, MENG Shu |
| Department of Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China |
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Abstract Objective To design the virtual simulation teaching scale, and analyze its reliability and validity in the evaluation of Harvey simulation teaching. Methods By searching the clinical questionnaires databases at home and abroad, and combining the characteristics of Harvey course, a virtual simulation teaching scale was developed. The clarity and content validity of the questionnaire were evaluated by an expert panel composed of clinical teachers and experts. A total of 25 students were randomly selected from Shanghai Jiao Tong University School of Medicine to finish the online questionnaire. The questionnaire was finished again after 1-week interval and the test-retest reliability and internal consistency reliability were tested. Another 65 students were selected for constructing validity and discrimination validity analyses. Results The instruction clarity scores of each item of the virtual simulation teaching scale were 9.5-9.9. The scale-content validity index/average（S-CVI/Ave）was 1.0. The test-retest reliability intraclass correlation coefficient（ICC）for each item ranged from 0.63 to 0.91, as the total score of the scale was 0.75. There was no significant difference between the two tests（P>0.05）. The Cronbach’s α coefficient of internal consistency was 0.82. The KMO（Kaiser-Meyer-Olkin）and Bartlett spherical test approximation χ2 values were 0.64 and 502.9（P<0.01）. Conclusion The virtual simulation teaching scale showed promising reliability and validity in the evaluation of Harvey teaching system. It can be used to evaluate the effect of Harvey teaching system and guide the teaching of cardiovascular medicine.
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