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相关概念视频

Group Design02:01

Group Design

The most basic experimental design involves two groups: the experimental group and the control group. The two groups are designed to be the same except for one difference— experimental manipulation. The experimental group gets the experimental manipulation—that is, the treatment or variable being tested—and the control group does not. Since experimental manipulation is the only difference between the experimental and control groups, we can be sure that any differences between the two are due to...
Randomized Experiments01:13

Randomized Experiments

The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
Simple...
Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs01:20

Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs

Bioequivalence experimental study designs are crucial methodologies used in evaluating and comparing the bioavailability of different drug products. These designs are categorized into various types: completely randomized, randomized block, repeated measures, cross and carry-over, and Latin square designs.Completely randomized designs involve randomly allocating treatments to all subjects participating in the experiment. This allocation is achieved by assigning unique random numbers to subjects...

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相关实验视频

Updated: Jun 21, 2026

3D Printing of Preclinical X-ray Computed Tomographic Data Sets
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三维打印模型和共享决策:一个集群随机临床试验.

Aimal Khan1, Georgina E Sellyn2, Danish Ali1

  • 1Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.

JAMA network open
|June 3, 2025
PubMed
概括

三维 (3D) 打印模型增强了共享决策 (SDM) 并减少了接受结直肠手术的患者的焦虑. 这些模型可以改善患者在手术前咨询中的参与和理解.

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科学领域:

  • 外科教育的外科教育
  • 医学成像和建模 医学成像和建模
  • 以患者为中心的护理

背景情况:

  • 接受手术的患者往往会经历焦虑和缺乏参与决策的情况.
  • 三维 (3D) 打印模型为患者教育和参与提供了一种新的方法.

研究的目的:

  • 评估3D打印解剖模型对共享决策 (SDM) 和手术前焦虑的影响,在接受结肠或直肠切除的患者中.
  • 评估3D模型在改善患者理解和减少手术咨询期间焦虑方面的有效性.

主要方法:

  • 一个单中心集群随机临床试验,涉及6名外科医生和51名预定进行结直肠切除的成年患者.
  • 外科医生被随机分配使用3D打印模型或在手术前咨询期间提供通常的护理.
  • 结果包括患者对SDM (共享决策问卷) 的看法和焦虑程度 (州和地区焦虑清单).

主要成果:

  • 与常规护理组相比,3D打印模型辅导的患者报告SDM参与度显著更高 (89.5 vs 80.5,P=.01).
  • 与传统方法 (平均变化从50.4到48.0,P=.04) 相比,3D打印模型的使用导致患者焦虑得分显著降低 (平均变化从53.5到44.1).

结论:

  • 使用3D打印模型进行咨询显著改善了共享决策,并减少了接受结直肠手术的患者的焦虑.
  • 3D打印模型显示了作为增强手术环境中患者-临床医生合作和沟通的有价值工具的潜力.
  • 建议在不同的临床环境中进行进一步的研究,以探索3D打印模型的更广泛的实施和有效性.