Condition category
Ear, Nose and Throat
Date applied
09/03/2007
Date assigned
04/05/2007
Last edited
02/09/2009
Prospective/Retrospective
Retrospectively registered
Overall trial status
Completed
Recruitment status
No longer recruiting

Plain English Summary

Not provided at time of registration

Trial website

Contact information

Type

Scientific

Primary contact

Ms Cheryl Carling

ORCID ID

Contact details

PO box 7004
St Olavs Plass
Oslo
N-0130
Norway
+47 98627327
cheryl.carling@kunnskapssenteret.no

Additional identifiers

EudraCT number

ClinicalTrials.gov number

Protocol/serial number

N/A

Study information

Scientific title

Acronym

HIPPO (Health Information Project, Presentation Online)

Study hypothesis

The null hypotheses for this study are that in terms of congruence between peoples' values and treatment decisions there is no difference between the following graphical displays used to present the benefits of antibiotics for sore throat:
1. “Faces at 3 days” and “Bar graphs at 3 days”
2. “Bar graphs of Duration of symptoms” and “Bar graphs at 3 days”, and
3. ”Bar graphs at 0, 3 and 7 days” and “Bar graphs at 3 days.”

Ethics approval

The University at Buffalo (New York, USA), Health Sciences Institutional Review Board, approved on 15 May 2002.

Study design

Randomised controlled trial

Primary study design

Interventional

Secondary study design

Randomised controlled trial

Trial setting

Not specified

Trial type

Not Specified

Patient information sheet

Condition

Sore throat (hypothetical scenario)

Intervention

Presentations of graphical displays showing evidence of penicillin's effect on sore throat.

Intervention type

Other

Phase

Not Specified

Drug names

Primary outcome measures

Hypothetical treatment decision to take or not to take penicillin.

Secondary outcome measures

Understanding of and satisfaction with information, and preferred graphical display.

Overall trial start date

01/09/2004

Overall trial end date

31/10/2004

Reason abandoned

Eligibility

Participant inclusion criteria

Fluency in Norwegian and at least 18 years of age.

Participant type

Patient

Age group

Adult

Gender

Not Specified

Target number of participants

3000

Participant exclusion criteria

Previous participation in this trial.

Recruitment start date

01/09/2004

Recruitment end date

31/10/2004

Locations

Countries of recruitment

Norway

Trial participating centre

PO box 7004
Oslo
N-0130
Norway

Sponsor information

Organisation

Norwegian Knowledge Centre for the Health Services (Norway)

Sponsor details

PO box 7004
St Olavs Plass
Oslo
N-0130
Norway
+47 (0)23 25 50 00
post@kunnskapssenteret.no

Sponsor type

Other

Website

http://www.kunnskapssenteret.no/

Funders

Funder type

Research council

Funder name

Norwegian Research Council (Norway)

Alternative name(s)

Funding Body Type

Funding Body Subtype

Location

Results and Publications

Publication and dissemination plan

Not provided at time of registration

Intention to publish date

Participant level data

Not provided at time of registration

Results - basic reporting

Publication summary

2009 results in http://www.ncbi.nlm.nih.gov/pubmed/19707579

Publication citations

  1. Results

    Carling CL, Kristoffersen DT, Flottorp S, Fretheim A, Oxman AD, Schünemann HJ, Akl EA, Herrin J, MacKenzie TD, Montori VM, The effect of alternative graphical displays used to present the benefits of antibiotics for sore throat on decisions about whether to seek treatment: a randomized trial., PLoS Med., 2009, 6, 8, e1000140, doi: 10.1371/journal.pmed.1000140.

Additional files

Editorial Notes