Online Field Test of an Appendicitis Decision Support Tool

Study Overview
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Brief Summary
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After the recent publication of the CODA Trial comparing antibiotics and surgery for acute appendicitis, the investigators developed a comprehensive decision support tool. This tool will help patients understand the risks and benefits of each treatment and make a treatment decision. This study is an online randomized field test comparing the decision support tool to a control infographic and assessing it's affect on decisional outcomes, such as decisional conflict.

Official Title
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Online Field Test of an Appendicitis Decision Support Tool

Conditions
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Appendicitis Acute

Intervention / Treatment
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* Behavioral: Appendicitis Decision Support Tool
* Behavioral: Control Infographic


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: who live in the United States and who have not previously had appendicitis. Workers on Amazons Mechanical Turk Platform with an approval rating of 95% or higher Workers on Amazons Mechanical Turk Platform who live in the United States Workers on Amazons Mechanical Turn Platform who have not previously had appendicitis Exclusion Criteria: Employees or relatives of employees of the University of Washington

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Decision Support Tool<br>In this arm study participants saw a decision support tool consisting of a video and a interactive decision aid (www.appyornot.org). | Behavioral: Appendicitis Decision Support Tool<br>* Viewing of a decision support tool.<br>|
| Active Comparator: Infographic<br>Participant saw a static infographic providing information about the two treatments for appendicitis. | Behavioral: Control Infographic<br>* Viewing of a standardized infographic<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Decisional Conflict Pre vs. Post Intervention | Assessed using the validated decisional conflict scale comparing only participants in the intervention arm before and after viewing the decision support tool. | At time of enrollment | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Decisional Conflict Between Arms | Total score on the validated decisional conflict scale after viewing the intervention support tool or the control infographic. Scale ranges from 0-100 with higher scores being worse. | At time of enrollment | 
| Acceptability | Between arm comparison of the acceptability of the information presented to the participants rated on a 4 point acceptability scale with higher scores representing higher acceptability. | At time of enrollment | 
| Trust and Accuracy of Information | Participants perception of the trustworthiness and accuracy of the information presented to them on a 5 point scale with higher scores representing a higher perceived trustworthiness and perceived accuracy. | At time of enrollment | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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decision support, decision aid, decisional conflict