Effectiveness of information presentation in drug fact boxes

Drug fact boxes: efficacy of presentation formats - natural frequencies, percentages and bar graphs: a pilot study

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN17033137

Enrollment

300

Registered

2020-04-24

Start date

2020-05-04

Completion date

Unknown

Last updated

2023-02-27

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

Conditions

Drug information presentation Not Applicable

Interventions

Randomisation: each time a participant agreed to participate a random number is generated and the participant is allocated to the presentation format according to that number. The stu

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Adults > 18 years who have their primary residence in Germany and belong to the panel

Exclusion criteria

Exclusion criteria: Does not meet inclusion criteria

Design outcomes

Primary

Measure	Time frame
Verbatim knowledge/risk perception, which is surveyed by 9 items coded 1 (correct answer) or 0 (incorrect answer), measured immediately after the intervention	—

Secondary

Measure	Time frame
Measured immediately after the intervention: 1. Readability/comprehensibility is measured by four questions using a four-point Likert scale 2. Acceptance is measured by three questions using a four-stage interval scale 3. Relevance refers to the importance of the information. This endpoint is measured with one question	—

Countries

Germany

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026