Evaluating Attitudes Towards Organ Donation in Singapore

Study Overview
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Brief Summary
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One survey is conducted. Exploring the effect of different messages on family members' decision making on organ donation.

Detailed Description
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The investigators intend to examine the impact of nudging interventions in the form of a vignette designed to emulate the standard procedure of informing family members of a loved one's unfavourable prognosis. The investigators intend to examine the effect of the interventions on the eventual decision-making process of the family member.

Official Title
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Evaluating Attitudes Towards Organ Donation in Singapore

Conditions
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Control, Behavior

Intervention / Treatment
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* Other: Frame
* Other: Norms


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Above age 21 Singapore Citizens and Permanent Residents Exclusion Criteria: Below age 21 Non-citizens Not able to make decisions for self

Ages Eligible for Study
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Minimum Age: 21 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: Health Services Research
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| No Intervention: Control<br>Vignette contains no extra information | |
| Experimental: Frame<br>Vignette is framed in a particular manner | Other: Frame<br>* Vignette is framed in a way that nudges participant to leave a legacy<br>|
| Experimental: Norms<br>Vignette contains extra information about norms | Other: Norms<br>* Vignette informs the participant that most people choose an option to try to nudge participant into choosing that option as well<br>|
| Experimental: All<br>Vignette contains extra information about norms and is framed in a particular manner. | Other: Frame<br>* Vignette is framed in a way that nudges participant to leave a legacy<br>Other: Norms<br>* Vignette informs the participant that most people choose an option to try to nudge participant into choosing that option as well<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Binary survey item - Preferred option for mother's situation | A binary choice between 'Turning off life support' and 'Wait and see' which measures the efficacy of nudges on ultimate decision-making. | 3 minutes | 
| 10cm line scale survey item - Willingness for participant's mother's organs to be donated under brain death | A 10cm line scale will be given and participants will be asked to put a cross on the line that corresponds to what they are feeling. This will measure their willingness for their mother's organs to be donated under the conditions of brain death. | 3 minutes | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| 10cm line scale survey item - Willingness for participant's mother's organs to be donated under cardiac death | A 10cm line scale will be given and participants will be asked to put a cross on the line that corresponds to what they are feeling. This will measure their willingness for their mother's organs to be donated under the conditions of cardiac death. | 3 minutes | 
| 10cm line scale survey item - Willingness for participant's own organs to be donated under brain death | A 10cm line scale will be given and participants will be asked to put a cross on the line that corresponds to what they are feeling. This will measure their willingness to donate their own organs under conditions of brain death. | 3 minutes |