Department of Medical Imaging at the Ottawa Hospital/ The Ottawa Hospital Research Institute, University of Ottawa Faculty of Medicine, Room C159, The Ottawa Hospital Civic Campus, 1053 Carling Avenue, Ottawa K1Y 4E9, Canada.
BMC Med Educ. 2013 Feb 6;13:17. doi: 10.1186/1472-6920-13-17.
The purpose of this study is to evaluate the relationship between American College of Radiology (ACR) in-training examination scores and performance on the Royal College of Physicians and Surgeons of Canada (RCPSC) radiology licensing examination.
Percentile ACR examination scores for 67 residents were obtained from 1995 to 2011 for four years of training and compared with results of the RCPSC examination. Mean ACR scores of residents who passed and residents who failed their RCPSC examination were compared with a t-test. ACR scores and licensing examination results were correlated. Logistic regression was used to predict the probability of failure given an individual's ACR score. Receiver Operating Characteristic (ROC) curves were developed in order to estimate a threshold ACR score at or above which the risk of failure was negligible.
The ACR scores between residents who passed their licensing exam and those who failed were significantly different. There was moderate correlation between ACR scores and exam results. Using ROC curves for each year of training, the threshold ACR scores at or above which there was a negligible risk of exam failure were 32, 42, 63, and 47 for training years 1, 2, 3 and 4 respectively. Logistic regression curves, with 95% confidence intervals, were plotted for each year of training to predict RCPSC exam results based on an individual's ACR score.
ACR exam scores are a strong predictor of RCPSC examination performance. Percentile ACR scores can be used to identify residents at risk for future examination failure.
本研究旨在评估美国放射学院（ACR）培训考试成绩与加拿大皇家内科医生与外科医生学院（RCPSC）放射学执照考试成绩之间的关系。
从 1995 年到 2011 年，我们获得了 67 名住院医师在四年培训期间的 ACR 考试百分位成绩，并将其与 RCPSC 考试结果进行了比较。用 t 检验比较了通过和未通过 RCPSC 考试的住院医师的平均 ACR 分数。对 ACR 分数和执照考试结果进行了相关性分析。使用逻辑回归来预测给定个体 ACR 分数的失败概率。绘制了接收者操作特征（ROC）曲线，以便估计一个阈值 ACR 分数，在此分数以上，失败的风险可以忽略不计。
通过和未通过执照考试的住院医师之间的 ACR 分数有显著差异。ACR 分数与考试成绩之间存在中度相关性。对于每年的培训，使用 ROC 曲线确定了一个或多个阈值 ACR 分数，在这些分数以上，考试失败的风险可以忽略不计，这些分数分别为 1 年、2 年、3 年和 4 年的 32、42、63 和 47。对于每年的培训，我们绘制了逻辑回归曲线（带有 95%置信区间），根据个体的 ACR 分数预测 RCPSC 考试结果。
ACR 考试成绩是 RCPSC 考试成绩的有力预测指标。百分位 ACR 分数可用于识别未来考试失败风险较高的住院医师。
