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Related Concept Videos

Observational Studies01:11

Observational Studies

Observational studies are a type of analytical study where researchers observe events without any interventions. In other words, the researcher does not influence the response variable or the experiment's outcome.
There are three types of observational studies – Prospective, retrospective, and cross-sectional.
Prospective Study
Prospective studies, also known as longitudinal or cohort studies, are carried out by collecting future data from groups sharing similar characteristics. One example of...
Data Collection by Observations01:08

Data Collection by Observations

Data collection refers to a systematic way of obtaining, observing, measuring, and analyzing accurate information. Observational studies are one of the most widely used methods of data collection. It involves collecting data by observing the behavior and physical characteristics of a sample without making any modifications to the sample.
An astronomer viewing the motion and brightness of stars in the sky and recording the data is an example of observational data collection. A botanist recording...

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Related Experiment Video

Updated: May 21, 2026

Simulator Training for Endovascular Neurosurgery
08:08

Simulator Training for Endovascular Neurosurgery

Published on: May 6, 2020

Does ED crowding decrease the number of procedures a physician in training performs? A prospective observational

Clare L Atzema1, R Alexandra Stefan, Refik Saskin

  • 1Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada M4N 3M5. clare.atzema@ices.on.ca

The American Journal of Emergency Medicine
|June 5, 2012
PubMed
Summary
This summary is machine-generated.

Emergency department crowding did not impact the number of procedures trainees performed. However, perceived crowding was linked to more procedures being referred to consulting services.

Related Experiment Videos

Last Updated: May 21, 2026

Simulator Training for Endovascular Neurosurgery
08:08

Simulator Training for Endovascular Neurosurgery

Published on: May 6, 2020

Area of Science:

  • Medical Education
  • Emergency Medicine
  • Healthcare Operations

Background:

  • Emergency departments (EDs) often experience crowding, which can impact patient care and trainee education.
  • Understanding factors affecting procedural training is crucial for developing competent emergency physicians.

Purpose of the Study:

  • To investigate the relationship between ED crowding and the number of procedures performed by residents and medical students.
  • To determine if ED crowding influences the rate at which trainees are offered or perform procedures.

Main Methods:

  • A single-center, prospective, observational study was conducted over 8 months.
  • Data on trainee procedures and perceived ED crowding (physician assessment and ED length of stay) were collected.
  • Poisson regression analysis assessed the impact of crowding on procedures performed and referred.

Main Results:

  • A total of 804 procedures were performed by 113 trainees across 647 shifts.
  • ED crowding, measured by physician assessment or ED length of stay, was not significantly associated with the number of procedures trainees performed.
  • Perceived ED crowding correlated with a 256% increase in procedures referred to consulting services (P = .02).

Conclusions:

  • ED crowding does not appear to significantly affect the number of procedures trainees perform.
  • Perceived crowding in the ED is associated with an increased likelihood of referring procedures to consulting services, particularly for patients awaiting admission.