Construct validity of the LapSim laparoscopic surgical simulator
Construct validity of the LapSim laparoscopic surgical simulator
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DOI：
10.1016/j.amjsurg.2005.10.018
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发表时间：
2006-01-01
影响因子：
3
通讯作者：
Minter, RM
中科院分区：
文献类型：
--
作者：
Woodrum, DT;Andreatta, PB;Minter, RM
背景：计算机辅助模拟器可以提高腹腔镜手术培训的安全性和效率。在我们的培训课程实施沉浸LapSim（盖瑟斯堡，MD）模拟器之前，我们希望确定其结构效度（即，模拟器是否可以区分腹腔镜新手从学员有更丰富的经验）。方法：主题是医学生（MS），居民（RES），腹腔镜教师（FAC）。受试者进行10次重复的6个LapSim任务。LapSim在每个任务中测量6到10个参数的性能，并在组间比较性能。采用Bonferroni技术，采用事后t检验对3组进行配对比较。结果：腹腔镜经验的程度反映在每项任务至少I个参数的表现上。MS，RES，和FAC之间的性能的几种模式observed.Conclusions：LapSim的性能参数，可靠地区分不同的腹腔镜经验的受试者。然而，某些性能参数并不区分组。为了准确地测量受训者的技能水平，应该只使用敏感地测量真实表现水平的参数。(c)2006 Excerpta Medica Inc. All rights reserved.
Background: Computer-aided simulators may increase the safety and efficiency of training in laparoscopic surgery. Before implementation of the Immersion LapSim (Gaithersburg, MD) simulator in our training curriculum, we wished to determine its construct validity (ie, whether the simulator could differentiate laparoscopic novices from trainees with greater experience).Methods: Subjects were medical students (MS), residents (RES), and laparoscopic faculty (FAC). Subjects performed 10 repetitions of 6 LapSim tasks. The LapSim measured performance in 6 to 10 parameters per task, and performance was compared between groups. Post hoc t tests were used to make pair-wise comparisons among the 3 groups using the Bonferroni technique. Statistical significance was set at P < .05.Results: The degree of prior laparoscopic experience was reflected in performance on at least I parameter for each task. Several patterns of performance between MS, RES, and FAC were observed.Conclusions: The LapSim has performance parameters that reliably differentiate between subjects with varying laparoscopic experience. However, some performance parameters do not differentiate between groups. To accurately measure a trainee's skill level, only parameters that sensitively measure the true level of performance should be used. (c) 2006 Excerpta Medica Inc. All rights reserved.