DOI: 10.3886/icpsr39469.v1
title: Examining the Institutional Medical Mistrust Scale (IMMS) in the COVID-19 Pandemic, United States, 2022
title: Version 1

description: The objective of this study is to validate the Institutional Medical Mistrust Scale (IMMS) using a large, national population to better understand issues of public trust in healthcare and government organizations. The aims of this study are: (1) conduct a national population survey using the IMMS; (1a) examine the influence that healthcare organizations and governing institutions at the local, state, and federal level have on medical mistrust during the COVID-19 pandemic in the United States; (1b) test the psychometrics of the IMMS in a large national survey; (2) test the IMMS in a national population with intentional oversampling of African American/Black, Latinx, and chronic disease respondents in the United States.
The endpoints for this study are divided into psychosocial measures as well as physical measures including: (1) measurement of institutional medical mistrust among health care and local/state and federal government organizations; (2) mental and physical health; (3) vaccine uptake or hesitation; (4) factors associated with vaccine uptake or hesitation.
description: The objective of this study is to validate the Institutional Medical Mistrust Scale (IMMS) using a large, national population to better understand issues of public trust in healthcare and government organizations.
description: After data collection was completed, design weights were adjusted to account for any differential nonresponse that may have occurred. Depending on the specific target population for a given study, geodemographic distributions for the corresponding population are obtained from the CPS, the U.S. Census Bureau's American Community Survey (ACS), or in certain instances from the weighted KnowledgePanel profile data. For this purpose, an iterative proportional fitting (raking) procedure was used to produce the final weights. In the final step, calculated weights were examined to identify and, if necessary, trim outliers at the extreme upper and lower tails of the weight distribution. The resulting weights (<strong>WEIGHT_NEW</strong>) are then scaled to aggregate to the total sample size of all eligible respondents.
description: Presence of Common Scales: Institutional Medical Mistrust Scale
description: A cohort of participants recruited from a contracted third-party company, Ipsos, from their existing research panel (KnowledgePanel).
description: Datasets: 
DS1: Public-Use Data
description: Adults in the United States, 18 years of age or older. Smallest Geographic Unit: State
description: web-based surveyBased on ICPSR review of the P.I. Documentation and crosstabs in this release, there appear to have been 3 experiments conducted in the data collection instrument that varied the display order of questions and the response options within those questions, as laid out below:
<strong>Section Order Experiment:</strong> Based on crosstabs of the 3 variables (<strong>Q19_Q39_order,</strong> <strong>Q44_45_order,</strong> and <strong>Q46_48_order</strong>) these 3 variables appear to describe which of the sections in their names were displayed first, second, and third to the respondent. Notably, both <strong>Q19_Q39_order</strong> and <strong>Q46_48_order</strong> have 100% of responses in "Shown third". No further information was provided.
<strong>Sub-Section Order Experiment:</strong> Based on crosstabs of the 3 variables (<strong>Q19_Q39_order,</strong> <strong>Q44_45_order,</strong> and <strong>Q46_48_order</strong>), the variables in the format <strong>QXX_QYY</strong> such as <strong>Q26_Q32</strong> appear to describe which of the sub-sections in their name were displayed in order within the larger section (eg. for <strong>Q26_Q32</strong> = "Shown first", questions <strong>Q26</strong> through <strong>Q32</strong> were shown first within the <strong>Q19</strong> through <strong>Q39</strong> section).
<strong>Response Option Display Order Experiment:</strong> Based on variable labels, variables in a similar format to <strong>Q17_DO_1,</strong> <strong>Q18_DO_Q18_1,</strong> and <strong>Q18_ADO_1</strong> appear to describe which response options were displayed in specific positions to the respondent.