Expectations About the COVID-19 Vaccines

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04928911

Enrollment

1176

Registered

2021-06-16

Start date

2021-06-11

Completion date

2023-03-31

Last updated

2024-01-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Vaccine Adverse Reaction

Brief summary

This study collects information on expectations and attitudes towards the COVID-19 vaccines in participants about to receive a COVID-19 vaccine. This information will be linked to data on side effect occurrence collected in an independent study.

Detailed description

General hypothesis: Negative expectations and attitudes towards the vaccine are associated with a higher risk of side effects

Interventions

BIOLOGICALCOVID-19 vaccine

Adults about to receive a COVID-19 vaccine fill out a questionnaire of potential predictors of side effect occurrence

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

* Must have signed up to receive a COVID-19 vaccine in Denmark * Participants are also a part of the ENFORCE study from which outcome data is obtained * Must be able to read and understand Danish

Design outcomes

Primary

Measure	Time frame	Description
Rate of local and systemic reactions (self-report)	7 days after vaccination	Data obtained from independent study

Secondary

Measure	Time frame	Description
Grade 1-4 and serious adverse events	3-6 months after vaccination	Data obtained from independent study

Countries

Denmark

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026