Shahid Rizwana, Khan Rehan Ahmed, Yasmeen Rahila
Rawalpindi Medical University, Rawalpindi.
Riphah Academy of Research and Education, Riphah International University, Islamabad,Pakistan.
J Pak Med Assoc. 2019 Jan;69(1):34-43.
To establish the construct validity of Assessment of Medical Educational Environment by the Teachers inventory.
The cross-sectional analytical study was conducted from January to May 2017 and comprised doctors working as faculty in Rawalpindi Medical College, Rawalpindi, Pakistan, and its 3 teaching hospitals. Non-probability (purposive) sampling was used to meet the criteria of 5 participants per item of the Assessment of Medical Educational Environment by the Teachers inventory. Exploratory factor analysis was done using SPSS 20 and confirmatory factor analysis was done with version 16 of the Analysis of Moment Structures software.
Of the 250 subjects, 126(50.4%) were males and 124(49.6%) were females. Exploratory factor analysis ended with extraction of 11 components. It showed sufficiency of sample size and no multi-collinearity. Three (50%) of the six domains were finalised on the whole and 10(20%) of the 50 items were debarred from the inventory. All three domains had high reliability. Root mean square residual and chi square / degree of freedom were within acceptable limit. However, comparative fit index, goodness of fit index, normed fit index and root mean square error of approximation portrayed not only poor model fit after re-running confirmatory factor analysis, but also led to omission of further 16(32%) items with poor loadings from the inventory. Thus, there was exclusion of total 26(52%) items from the tool and the finalised Assessment of Medical Educational Environment by the Teachers inventory comprised 24(48%) items.
Construct validity of Assessment of Medical Educational Environment by the Teachers inventory could not be established, but the tool was found to be reliable.
建立教师版医学教育环境评估量表的结构效度。
于2017年1月至5月进行横断面分析研究，研究对象为巴基斯坦拉瓦尔品第医学院及其3家教学医院的教师。采用非概率（立意）抽样，以满足教师版医学教育环境评估量表每个项目5名参与者的标准。使用SPSS 20进行探索性因素分析，使用Moment Structures软件16版进行验证性因素分析。
250名受试者中，126名（50.4%）为男性，124名（49.6%）为女性。探索性因素分析最终提取出11个成分。结果显示样本量充足且不存在多重共线性。六个领域中的三个（50%）整体确定，50个项目中有10个（20%）被排除在量表之外。所有三个领域都具有较高的信度。均方根残差和卡方/自由度在可接受范围内。然而，重新运行验证性因素分析后，比较拟合指数、拟合优度指数、规范拟合指数和近似均方根误差不仅显示模型拟合不佳，还导致另外16个（32%）载荷较差的项目从量表中被排除。因此，该工具总共排除了26个（52%）项目，最终确定的教师版医学教育环境评估量表包含24个（48%）项目。
未能建立教师版医学教育环境评估量表的结构效度，但该工具被发现具有可靠性。
