COVID-19
Conditions
Keywords
Colloquial language, uncertainty, bias
Brief summary
Randomized trial testing 6 forms of a communication summarizing the results of a recent study (about the effects of wearing glasses on reducing covid infection risk). The goal of the trial is to test the effect of different language options to describe uncertainty, and of including the margin of error around the main result.
Detailed description
The study is designed as a proof-of-concept exercise to develop and test a communication meant to summarize the results of a recent randomized trial examining the effects of wearing glasses on the chance of developing COVID-19. The objectives of the randomized trial are: * To compare the effects of three ways of communicating the overall uncertainty of the effects of wearing glasses to reduce the chance of getting COVID and * To compare the effects of including the margin of error (confidence interval) compared to not including it. Researchers will conduct an online, parallel group, individually randomized, pragmatic trial using a 3x2 factorial design, ie, 3 uncertainly language options (GRADE language, colloquial language or none 2 options for the statistical margin of error for the main results (margin of error language or none).
Interventions
OTHEROverall uncertainty language
Researchers are testing different forms of information about overall study uncertainty and margin of error around main result
Sponsors
Norwegian Institute of Public Health
Trustees of Dartmouth College
Study design
Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
OTHER
Masking
SINGLE (Investigator)
Intervention model description
3 options for describing bias/uncertainty about results 2 options for margin of error around main result (we will run the trial twice on 2 different online platforms)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* \>= 18 years old * literate in English or Norwegian * currently residing in Norway or the United States
Exclusion criteria
* individuals who regularly wear any kind of glasses (i.e., prescription or sunglasses) all or most of the time
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| understanding of overall uncertainty of benefit (of wearing glasses to reduce the chance of covid infection) | within 1 day | How sure about the effect (4 point scale from very unsure to very sure) |
| understanding of overall uncertainty of harm (of wearing glasses to reduce the chance of covid infection) | within 1 day | How sure about the effect (4 point scale from very unsure to very sure) |
| sufficiency of what is known about the effects of wearing glasses to reduce the chance of covid infection | within 1 day | How sure about the effect (4 point Likert scale) |
| Understanding the margin of error around the benefit of wearing glasses to reduce covid | within 1 day | this is a co-primary outcome which will be used only to compare the 3 versions that include the margin of error to the 3 versions that do not |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| perceptions fo information provided (trustworthy summary?) | within 1 day | 4 point Likert scale (strongly agree, agree, disagree, strongly disagree) |
| perceptions fo information provided (sufficient summary?) | within 1 day | 4 point Likert scale (strongly agree, agree, disagree, strongly disagree) |
| perceptions fo information provided (clarity of info about benefit) | within 1 day | 4 point scale (very clear, clear, unclear, very unclear) |
| perceptions fo information provided (clarity of info about harm) | within 1 day | 4 point scale (very clear, clear, unclear, very unclear) |
| perceived effect of wearing glasses to reduce chance of covid infection | within 1 day | What is the effect on a 5 point scale (lowers a lot, lowers a little, no effect, increase a little, increases a lot |
| perceptions fo information provided (share info with others?) | within 1 day | 4 point scale (definitely yes, probably yes, probably no, definitely no) |
| Decisional conflict (hard to make decision) | within 1 day | 4 point LIkert scale (strongly agree, agree, disagree, strongly disagree) |
| Decisional conflict (made informed decision) | within 1 day | 4 point LIkert scale (strongly agree, agree, disagree, strongly disagree) |
| Decisional conflict (satisfied with decision) | within 1 day | 4 point LIkert scale (strongly agree, agree, disagree, strongly disagree) |
| perceptions fo information provided (info helpful?) | within 1 day | 4 point scale (very helpful, helpful, unhelpful, very unhelpful) |
| how likely is it that wearing glasses reduces the chance of covid infection | within 1 day | 4 point scale (very likely, likely, unlikely, very unlikely) |
| intended behavior (if there were a surge in covid in your area, how likely would you be to wear glasses to reduce the chance of covid infection | within 1 day | 4 point scale (very likely, likely, unlikely, very unlikely |
| intended behavior (if there were very few cases of covid in your area, how likely would you be to wear glasses to reduce the chance of covid infection | within 1 day | 4 point scale (very likely, likely, unlikely, very unlikely |
Countries
Norway
Outcome results
None listed