Related Experiment Video
Updated: Sep 27, 2025
08:27
A New Hybrid Quantitative Evaluation Model for Axillary Junctional Hemorrhage in Swine
Published on: December 6, 2024
404
Comparison of two teaching methods for stopping the bleed: a randomized controlled trial
Shuangyi Chen1,2, Jinfei Li1,2, Michael A DiNenna3
1Department of Orthopaedic Surgery, The Third Xiangya Hospital of Central South University, Changsha, 410013, China.
BMC Medical Education
|April 15, 2022
Summary
The problem-, team-, and evidence-based learning (PTEBL) method combined with a trauma simulator improved "Stop the Bleed" (STB) skills more than traditional methods. This approach enhances confidence and willingness to rescue in doctoral candidates.
Area of Science:
- Medical Education
- Trauma Care
- Surgical Skills Training
Background:
- The
- Stop the Bleed
- (STB) campaign has improved trauma care since 2016.
- Limited research exists on teaching STB using trauma patient simulators.
- This study introduces a novel PTEBL teaching method with a trauma simulator for STB training.
Purpose of the Study:
- To compare the effectiveness of a new PTEBL teaching method combined with a trauma patient simulator (Caesar) against traditional methods for STB skills training.
- To evaluate the impact on doctoral candidates' confidence and willingness to perform haemostasis.
- To assess the role of simulation in enhancing learning and teacher-student interaction.
Main Methods:
- Seventy-eight doctoral candidates were randomly assigned to either a control group (traditional teaching) or an experimental group (PTEBL with Caesar simulator).
- Confidence in STB skills and willingness to rescue were measured before and after the course.
- Statistical analysis was used to compare outcomes between the groups.
Main Results:
- The experimental group showed significantly higher confidence in using bandages and tourniquets compared to the control group (P<0.05).
- More students in the experimental group believed the simulator improved learning (81.8% vs. 55.9%) and reported higher teacher-student interaction (97.7% vs. 85.3%).
- Overall teaching effectiveness was superior in the experimental group (97.7% vs. 85.3%, P=0.042), with a strong correlation between interaction and effectiveness.
Conclusions:
- The PTEBL method combined with the Caesar simulator effectively enhances STB skills mastery in doctoral candidates.
- This simulation-based approach overcomes limitations of traditional teaching methods.
- The findings suggest significant value in adopting this method for advanced STB training programs.
Related Concept Videos
01:11Blinding
3.3K
Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
3.3K
02:01Group Design
9.7K
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...
9.7K
01:13Randomized Experiments
8.0K
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...
Simple randomization
Simple...
8.0K
02:07Blind Procedures
12.3K
Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which...
12.3K
01:16Crossover Experiments
3.8K
Crossover experiments, also called the repeated-measurements design, is a study design in which all experimental units are exposed to all treatments in different periods. Crossover experiments are generally used in psychology, the pharmaceutical industry, agriculture, and medicine.
Crossover designs are performed even with smaller sample sizes since the samples can act as their controls. These are better than simple randomized trials since patients are exposed to all the treatments.
Crossover designs are performed even with smaller sample sizes since the samples can act as their controls. These are better than simple randomized trials since patients are exposed to all the treatments.
3.8K
01:20Comparing the Survival Analysis of Two or More Groups
311
Survival analysis is a cornerstone of medical research, used to evaluate the time until an event of interest occurs, such as death, disease recurrence, or recovery. Unlike standard statistical methods, survival analysis is particularly adept at handling censored data—instances where the event has not occurred for some participants by the end of the study or remains unobserved. To address these unique challenges, specialized techniques like the Kaplan-Meier estimator, log-rank test, and...
311