Related Experiment Video
Updated: Dec 19, 2025

Setup and Execution Of the Blindfolded Code Training Exercise
Published on: March 29, 2019
The Effect of Numbered Jerseys on Directed Commands, Teamwork, and Clinical Performance During Simulated Emergencies
Abstract:
Communication and teamwork are essential during inpatient emergencies such as cardiac arrest and rapid response (RR) codes. We investigated whether wearing numbered jerseys affect directed commands, teamwork, and performance during simulated codes. Eight teams of 6 residents participated in 64 simulations. Four teams were randomized to the experimental group wearing numbered jerseys, and four to the control group wearing work attire. The experimental group used more directed commands (49% vs. 31%, p < .001) and had higher teamwork score (25 vs. 18, p < .001) compared with control group. There was no difference in time to initiation of chest compression, bag-valve-mask ventilation, and correct medications. Time to defibrillation was longer in the experimental group (190 vs. 140 seconds, p = .035). Using numbered jerseys during simulations was associated with increased use of directed commands and better teamwork. Time to performance of clinical actions was similar except for longer time to defibrillation in the jersey group.
Related Concept Videos
Obedience
Types of Reports III: Telephone and Verbal Reports
Here's an overview of each type:
Telephone Orders
Milgram's Obedience to Authority
Bystander Effect
Aneurysm III: Interprofessional Care
Social Facilitation

