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PROJECT 2 EXAMPLE: Feedback X Prevalence Using Dermatology Stimuli

NCT05244122 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 1121

Last updated 2022-10-26

Study results available
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Summary

Imagine that a dermatologist spends the morning seeing patients who have been referred for suspicion of skin cancer. Many of them do, in fact, have skin lesions that require treatment. For this set of patients, disease 'prevalence' would be high. Suppose that the next task is to spend the afternoon giving annual screening exams to members of the general population. Here disease prevalence will be low. Would the morning's work influence decisions about patients in the afternoon? It is known from other contexts that recent history can influence current decisions and that target prevalence has an impact on decisions. In this study, decisions were decisions about skin lesions from individuals with varying degrees of expertise, using an online, medical imaging labelling app (DiagnosUs). This allowed examination of the effects of feedback history and prevalence in a single study. Blocks of trials could be of low or high prevalence, with or without feedback. Over 300,000 individual judgements were collected. (taken from Wolfe, J. M. (2022). How one block of trials influences the next: Persistent effects of disease prevalence and feedback on decisions about images of skin lesions in a large online study. . Cognitive Research: Principles and Implications (CRPI), 7, 10. doi: https://doi.org/10.1186/s41235-022-00362-0

Conditions

  • Decision Making

Interventions

BEHAVIORAL

Feedback

presence or absence of trial by trial feedback

BEHAVIORAL

Prevalence

In some blocks, skin cancer "target" images were present on 50% of trials (high prevalence). In other blocks, disease prevalence was 20%.

Sponsors & Collaborators

  • Brigham and Women's Hospital

    lead OTHER

Principal Investigators

  • Jeremy M Wolfe, PhD · Brigham and Women's Hospital

Study Design

Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2021-06-22
Primary Completion
2021-06-27
Completion
2021-06-27

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05244122 on ClinicalTrials.gov