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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03554252
Other study ID # 214-09-7672
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date April 1, 2018
Est. completion date August 1, 2018

Study information

Verified date May 2018
Source University of Split, School of Medicine
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Participants will be randomly given one of two formats containing descriptions of health interventions. In one format, participants will have to read short summaries where results of the intervention are presented as frequencies and the side effects of health intervention are presented as percentages, while in another format the frames will be reversed (results will be presented as percentages and side effects as frequencies). After reading, participants will be asked several questions about the content of the summary and its conclusions.


Recruitment information / eligibility

Status Completed
Enrollment 225
Est. completion date August 1, 2018
Est. primary completion date August 1, 2018
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 99 Years
Eligibility Inclusion Criteria:

- Patients who are visiting their family doctor, and are at least 18 old. Students of biomedical studies at University of Split School of Medicine, who are at least 18 years old.

Exclusion Criteria:

- Participants younger than 18 years.

Study Design


Related Conditions & MeSH terms

  • Health Knowledge, Attitudes, Practice

Intervention

Other:
Frequencies
Results are presented as natural frequencies (e.g. the drug was effective for 1 out of 10 people) while side effects are presented as percentages (e.g. 40% participants experienced severe side effects)
Percentages
Results are presented as percentages (e.g. the drug was effective for 10% of people) while side effects are presented as natural frequencies (e.g. 4 out of 10 participants experienced severe side effects)

Locations

Country Name City State
Croatia University of Split School of Medicine Split

Sponsors (1)

Lead Sponsor Collaborator
University of Split, School of Medicine

Country where clinical trial is conducted

Croatia, 

References & Publications (1)

Schapira MM, Walker CM, Cappaert KJ, Ganschow PS, Fletcher KE, McGinley EL, Del Pozo S, Schauer C, Tarima S, Jacobs EA. The numeracy understanding in medicine instrument: a measure of health numeracy developed using item response theory. Med Decis Making. 2012 Nov-Dec;32(6):851-65. doi: 10.1177/0272989X12447239. Epub 2012 May 25. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Primary Understanding Number of the correct answers about the content of the summary, which will consist of four multiple choice questions (with four possible answers where only one is correct, for each question) about the text the participants are reading. Questions will be developed by research team and revised by expert in health communication. The scale ranges from 0-4, where greater score indicates better understanding of the material. 3 months
Secondary Attitudes towards the appropriateness of this type of presentation of health information Likert type scale from 1-10 (1 indicating low appropriateness and 10 would be completely appropriate presentation) 3 months
Secondary Health numeracy 5 questions about the numerical tasks placed in medical content, total score is number of correct answers on those questions. The five questions are part of Numeracy Understanding in Medicine Instrument (Schapira et al, 2012), and we will translate only the questions focusing on Probability section. Cronbach's alpha in previous research was 0.86 (Schapira et al, 2012). The questions will be revised by independent translator and back translated to English. The scale range is from 0-5, where higher score indicates higher numeracy levels. 3 months
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