Department of Pediatrics, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Substance Abuse Prevention Research Center, Research Institute for Health, Kermanshah University of Medical Sciences, Kermanshah, Iran.
BMC Med Educ. 2021 Oct 14;21(1):531. doi: 10.1186/s12909-021-02932-0.
One of the main elements that help students in research projects and composing dissertations is the student-supervisor relationship. A valid and reliable tool to measure this seems essential and it is the objective of the present study to validate and assess the psychometric properties of a questionnaire on supervisor-doctoral student interaction (QSDI) in Iran.
Before starting the study, a permission from the developer of the tool was secured. Then the tool was forward-backward translated. After preparing the Farsi version of the tool, content validity was confirmed through qualitative and quantitative methods. To examine construct validity, exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were conducted with participation of 218 and 410 MD, MSc, and PhD students of medical sciences, respectively. To check reliability of the tool, correlation coefficient was used. To examine internal consistency of the tool, Cronbach's alpha was used. Data analyses were done in SPSS (v.25) and LISREL (v.8).
The EFA and CFA results revealed eight factors and 39 items. The value of R-square for the model was equal to 0.99, which means 99% of changes in the dependent variable (supervisor-student interaction) is attributed to the independent variable (41 items). That is, 99% of the dependent variable changes is due to the independent variables. The main indices of the model based on factor analyses were supported (0.9<), which indicated goodness of fit of the model (χ2/df = 1.76, CFI, NFI, TLI = 0.98 GFI = 0.91, RMSEA = 0.043, R-square = 0.99). The significance level for correlation coefficient was below 0.05. Reliability of the tool was supported based on internal correlation (Cronbach's alpha) equal to 0.943 for the whole tool and in 0.89-0.97 range for the subscales.
In general, the results showed that the Farsi version of QSDI (eight factors and 39 items) had acceptable and applicable indices and it can be used as a valid tool in different fields for higher education students of medical sciences.
在研究项目和论文撰写中，帮助学生的一个主要因素是师生关系。因此，似乎有必要开发一种有效的、可靠的工具来衡量这一点，这也是本研究的目的，即验证并评估伊朗博士生导师-博士生互动问卷（QSDI）的心理测量特性。
在开始研究之前，从工具的开发者那里获得了许可。然后对工具进行了正向和反向翻译。在准备好工具的波斯语版本后，通过定性和定量方法确认了内容效度。为了检验结构效度，分别对 218 名和 410 名医学博士、理学硕士和博士研究生进行了探索性因子分析（EFA）和验证性因子分析（CFA）。为了检查工具的可靠性，使用了相关系数。为了检查工具的内部一致性，使用了 Cronbach's alpha。数据分析使用 SPSS（v.25）和 LISREL（v.8）进行。
EFA 和 CFA 结果显示有 8 个因子和 39 个项目。模型的 R-square 值等于 0.99，这意味着因变量（师生互动）的 99%变化归因于自变量（41 个项目）。也就是说，因变量的 99%变化归因于自变量。基于因子分析的模型主要指标得到支持（0.9<），这表明模型拟合度良好（χ2/df = 1.76，CFI、NFI、TLI = 0.98，GFI = 0.91，RMSEA = 0.043，R-square = 0.99）。相关系数的显著性水平低于 0.05。基于内部相关性（Cronbach's alpha），工具的可靠性得到支持，整个工具的 Cronbach's alpha 值为 0.943，子量表的范围为 0.89-0.97。
总的来说，结果表明，QSDI 的波斯语版本（8 个因子和 39 个项目）具有可接受和适用的指标，可作为医学科学高等教育学生在不同领域的有效工具。
