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The Visualization of Uncertainty in Clinical Diagnostic Reasoning for Pulmonary Embolism

NCT ID: NCT01752673

Last Updated: 2012-12-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2011-03-31

Study Completion Date

2011-10-31

Brief Summary

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Medical reasoning is a form of inquiry that examines the thought processes involved in making medical decisions. When physicians are faced with patients' symptoms or signs, their thought processes follow either direct shortcuts to suspect a diagnosis or go into a deeper and more analytic process to reach a diagnosis. The second pathway is less prone to biases and errors. This study explores whether the use of an interactive visual display of probabilities of pulmonary embolism generated from positive or negative test results will increase the adherence to evidence based guidelines in the diagnosis of pulmonary embolism.

Detailed Description

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Conditions

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Pulmonary Embolism Diagnostic Uncertainty Clinical Reasoning Evidence Based Medicine Visualization of Uncertainty

Keywords

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randomized controlled study

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Blinding Strategy

NONE

Study Groups

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Visualized pulmonary embolism computer task model

This group of participants was presented and trained to use a visual representation of diagnostic pathway for pulmonary embolism. The design of this visual representation is based on Bayes theorem and cognition enhancing visual design principles.

Group Type EXPERIMENTAL

Visualized pulmonary embolism computer task model

Intervention Type OTHER

This group of participants was presented and trained to use a visual representation of diagnostic pathway for pulmonary embolism. The design of this visual representation is based on Bayes theorem and cognition enhancing visual design principles.

Didactic review pulmonary embolism lecture

This group of participants was presented with a didactic lecture covering the diagnostic approach of pulmonary embolism.

Group Type ACTIVE_COMPARATOR

Didactic review lecture

Intervention Type OTHER

This group of participants was presented with a didactic lecture covering the diagnostic approach of pulmonary embolism.

Interventions

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Visualized pulmonary embolism computer task model

This group of participants was presented and trained to use a visual representation of diagnostic pathway for pulmonary embolism. The design of this visual representation is based on Bayes theorem and cognition enhancing visual design principles.

Intervention Type OTHER

Didactic review lecture

This group of participants was presented with a didactic lecture covering the diagnostic approach of pulmonary embolism.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Medical students, University of Calgary, in clerkship who finished at least 4 weeks of a block of medicine rotation at any hospital site.
* First year subspecialty or Internal Medicine residents.
* Practicing physicians in the subspecialties of Internal Medicine or Emergency Medicine.

Exclusion Criteria

* Physicians in the subspecialty of Haematology or Respiratory
Minimum Eligible Age

24 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Calgary

OTHER

Sponsor Role lead

Responsible Party

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Ghazwan Altabbaa

Doctor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Ghazwan Altabbaa, MD MSc

Role: PRINCIPAL_INVESTIGATOR

University of Calgary

Locations

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University of Calgary

Calgary, Alberta, Canada

Site Status

Countries

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Canada

Other Identifiers

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23231

Identifier Type: -

Identifier Source: org_study_id