Riggs J W, Blanco J D
Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Texas Medical School at Houston.
Obstet Gynecol. 1994 Aug;84(2):311-3.
To determine whether there is a relation between lecture attendance and factual knowledge of obstetrics and gynecology, as measured by the National Board of Medical Examiners (NBME) clinical science subject examination.
We analyzed data on 197 students completing 8-week obstetrics and gynecology rotations from July 1, 1991 to June 30, 1992. Each student was expected to attend a weekly lecture series, and each completed the NBME clinical science subject examination at the end of the clerkship. Student attendance and board scores were correlated at the end of the academic year overall and by subgroups. Scores in the top and bottom 15% were defined as good and poor performance, respectively.
A negative correlation (r = -0.1738, P = .0146) was found between percent absence and examination score. The odds ratio for poor performance was 5.48 (95% confidence interval 1.3-26.5; P = .015) for the subgroup of students with more than 30% absence compared to those without absences. Odds ratios for scoring in the upper 15th percentile were not significant.
The negative correlation and the high odds ratio for poor performance suggest the value of monitoring attendance and identifying students at risk for poor performance (more than 30% absence). Lower absence rates did not predict performance.
通过美国国家医学考试委员会（NBME）临床科学科目考试来确定听课出勤情况与妇产科实际知识之间是否存在关联。
我们分析了197名学生的数据，这些学生在1991年7月1日至1992年6月30日期间完成了为期8周的妇产科轮转实习。每名学生都要参加每周的系列讲座，并在实习结束时完成NBME临床科学科目考试。在学年结束时，总体及按亚组对学生的出勤情况与考试成绩进行了相关性分析。成绩排名前15%和后15%的分别被定义为表现优秀和表现较差。
缺勤百分比与考试成绩之间存在负相关（r = -0.1738，P = 0.0146）。与无缺勤的学生亚组相比，缺勤超过30%的学生亚组表现较差的优势比为5.48（95%置信区间1.3 - 26.5；P = 0.015）。成绩排名前15%的优势比不显著。
负相关以及表现较差的高优势比表明监测出勤情况并识别表现较差风险学生（缺勤超过30%）的价值。较低的缺勤率并不能预测成绩表现。
