1.
ANZCTR; 08/09/2023; TrialID: ACTRN12623000981628
Clinical Trial Register
| ICTRP | ID: ictrp-ACTRN12623000981628
ABSTRACT
Condition:
COVID-19 vaccine ;Health literacy;COVID-19 vaccine
Health literacy;Infection - Other infectious diseases;Public Health - Other public health
Intervention:
The intervention is a short piece of written material addressing misinformation about COVID-19 vaccines and fertility. The written material was designed specifically for this study. The intervention will be delivered as part of an online experiment over the internet.After answering some questions about themselves, participants will be asked to read written information on their computer or phone screen. Participants will receive a single written intervention according to their randomised group. There will be a control group and 3 intervention groups.
- The control message will provide correct information about COVID-19 vaccines and fertility.
- Intervention 1 will provide correct information + information on misleading techniques. The misleading technique that the intervention provides information about is called "cherry-picking". This is where people who spread the false claim that COVID-19 vaccines cause infertility focus on some of the facts, and ignore other facts that don’t support the false claim.
- Intervention 2 will provide correct information + information on untrustworthy sources. The information on untrustworthy sources focuses on what makes an information source lack credibility or trustworthiness.
- Intervention 3 will provide correct information + information on misleading techniques + information on untrustworthy sources.
We will require participants to view the intervention text for a minimum length of time, calculated at 100 milliseconds per word.
Primary outcome:
The primary outcome is the mean agreement with misinformation after the intervention. We will ask participants to respond to 6 items measuring the extent to which they agree with the misinformation (COVID-19 vaccines can cause infertility). For each item, the participants will be asked to report how much they agree with the statements using a 10 point scale, where 1 stands for Strongly Disagree (1) and 10 stands for Strongly Agree (10). We will then calculate each participant’s mean (SD) response to the six items to calculate an overall response. [ At baseline, immediately before receiving the intervention (covariate).Immediately after receiving the intervention (primary outcome)
]
Criteria:
Inclusion criteria: Australian adults (>=18 years)who have concerns about serious side effects of COVID-19 vaccines
who provide digital consent.
Exclusion criteria: Are not concerned about serious side effects of COVID-19 vaccines
2.
ANZCTR; 16/12/2022; TrialID: ACTRN12622001554752
Clinical Trial Register
| ICTRP | ID: ictrp-ACTRN12622001554752
ABSTRACT
Condition:
Vaccination intention;COVID-19;Vaccination intention
COVID-19;Public Health - Health promotion/education;Mental Health - Studies of normal psychology, cognitive function and behaviour
Intervention:
The intervention is a short piece of written material designed to encourage parents to vaccinate their child aged 5-11 years for COVID-19. The messages were designed specifically for this study. The intervention is delivered as part of an online experiment over the internet. After answering some questions about themselves, participants are asked to read the written information on their computer or phone screen. They are given the intervention once. The anticipated time needed to read the text is approximately 30 seconds. Participants must spend a minimum of 30 seconds on this screen. This requirements to stay on the intervention screen is used for the purpose of encouraging adherence to the intervention. There is no further assessment of intervention adherence.Arm 1 is a message focusing on the personal health impacts of vaccinating. Arm 2 is a message focusing on family and community health impacts of vaccinating. Arm 3 is a message focusing on non-health benefits of vaccinating (freedom messaging). Arm 4 is a message focusing on personal choice and control (personal choice-based messaging).
Primary outcome:
Intention to vaccinate child for COVID-19. This outcome will be assessed using a single survey item (a 5-point Likert scale from ‘Definitely not’ to ‘Definitely yes’)[Immediately after receiving the intervention]Criteria:
Inclusion criteria: • 18 years or older• living in Australia
• parent of a child aged between 5-11 years at the time of the study
• competent in reading and writing in English
Exclusion criteria: Parents of children who are medically exempt from COVID-19 vaccination
Parents of children already vaccinated against COVID-19
3.
ANZCTR; 02/11/2022; TrialID: ACTRN12622001404718
Clinical Trial Register
| ICTRP | ID: ictrp-ACTRN12622001404718
ABSTRACT
Condition:
Vaccination;COVID-19;Vaccination
COVID-19;Infection - Other infectious diseases;Public Health - Other public health
Intervention:
The intervention is a short piece of written material designed to encourage uptake of booster doses of COVID-19 vaccines. The messages were designed specifically for this study. The intervention is delivered as part of an online experiment over the internet. After answering some questions about themselves, participants are asked to read the written information on their computer or phone screen. They are given the intervention once. The anticipated time needed to read the text is approximately 30 seconds. Participants must spend a minimum of 30 seconds on this screen. This requirement to stay on the intervention screen is used for the purpose of encouraging adherence to the intervention.Arm 1 is a message focusing on personal health impacts of vaccinating
Arm 2 is a message focusing on family and community health impacts of vaccinating
Arm 3 is a message focusing on non-health benefits of vaccinating, such as freedom from public health restrictions and ability to travel
Arm 4 is a message focusing on personal choice and control
Arm 5 is a control message, providing information on COVID-19 vaccine booster dose eligibility.
Primary outcome:
Intention to receive a booster dose of COVID-19 vaccine. This outcome will be assessed using a single survey item, administered to participants immediately after the intervention.[Immediately after receiving the intervention]Criteria:
Inclusion criteria: • 18 years or older• living in Australia
• have had at least one dose of a COVID-19 vaccine
• competent in reading and writing in English
Exclusion criteria: • have not had a dose of COVID-19 vaccine, including Individuals who are medically exempt