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Field
Experimental Design (Public)
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Before
This study is a 4-arm pilot randomized controlled study, conducted online. A convenience sample of parents of young children will be recruited through the Turk Prime portal of the Amazon Mechanical Turk (mTurk) worksharing site.
Subject recruitment will begin in December 2017 and end in April 2017. Subjects will be enrolled in the
study after they complete an online screener. The baseline survey will take about 10-15 minutes. All participants who compete the baseline survey and who have a PAC-V score of at least 40/100 (indicating moderate vaccine hesitancy) will be invited to complete the experiment after a two-week wash out delay. The experiment will take15-20 minutes. Analysis and publication will be completed by December 2017.
Amendment note 12/20/17: Wrong group was originally invited to the experimental part of the trial. We are repeating by inviting the correct group to the experimental arm. Our analysis plan from the original submission remains unchanged. Anticipate ending by 5/18.
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After
This study is a 4-arm pilot randomized controlled study, conducted online. A convenience sample of parents of young children will be recruited through the Turk Prime portal of the Amazon Mechanical Turk (mTurk) worksharing site.
Subject recruitment will begin in December 2017 and end in April 2017. Subjects will be enrolled in the
study after they complete an online screener. The baseline survey will take about 10-15 minutes. All participants who compete the baseline survey and who have a PAC-V score of at least 40/100 (indicating moderate vaccine hesitancy) will be invited to complete the experiment after a two-week wash out delay. The experiment will take15-20 minutes. Analysis and publication will be completed by December 2017.
Amendment note 12/20/17: In following the plan above, we inadvertently invited the wrong group (those with lower vaccine hestiancy) to the trail based on a coding error for the vaccine hesitancy score. We are repeating the trial by inviting the correct group to the experimental arm, beginning on 12/24/2017. Our analysis plan from the original submission remains unchanged. We anticipate ending by 5/31/18.
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