Condition category
Not Applicable
Date applied
25/03/2015
Date assigned
17/04/2015
Last edited
03/08/2017
Prospective/Retrospective
Retrospectively registered
Overall trial status
Completed
Recruitment status
No longer recruiting

Plain English Summary

Background and study aims
Policy makers in health care need quick and easy access to reliable health systems evidence in order to make well-informed decisions. However, searching for health systems evidence can be challenging. To try to meet this challenge, PDQ-Evidence was launched in 2012. PDQ-Evidence is a freely available database with thousands of records to publications about health systems, including systematic reviews on how to organise, finance, and govern health systems. Its aim is to become the only database needed to search when looking for health systems evidence. This study tests if PDQ-Evidence is as ‘Pretty Darn Quick’ as it claims to be. It compares how quick and easy PDQ-Evidence is to search, and how well it performs when searching for systematic reviews compared to other databases that also provide access to systematic reviews about health systems evidence.

Who can participate?
Healthcare policy makers, health managers, health researchers and health professionals.

What does the study involve?
Participants complete an online questionnaire, including training and work experience, current position, first language, and prior experience with searching for health systems evidence. Participants try to find systematic reviews that addresses both a pre-defined and an own-defined health systems question, using PDQ-Evidence and two additional self-selected databases. Half of the participants receive a questionnaire where they search PDQ-Evidence before they search the two additional databases. The other half receives a questionnaire where they search PDQ-Evidence after they search the two additional databases. Participants use maximum 10 minutes per question to search for systematic reviews in each database. To report the evidence found that addresses the questions, participants report the title, author and year of maximum three relevant systematic reviews. They also report how much time they spend finding the reviews, and the perceived ease of use of each database they search. Finally, they give feedback on what they like, dislike, and find challenging about PDQ-Evidence, and suggest how PDQ-Evidence can be improved.

What are the possible benefits and risks of participating?
Participants get to know PDQ-Evidence, and to influence further development and improvements of the database. They are indirectly benefiting health care policy makers in need of easy and quick access to reliable health systems evidence. There is no risk associated with participating in this study, perhaps apart from the confiscated time it takes to answer the questionnaire.

Where is the study run from?
Norwegian Institute of Public Health, Oslo (Norway)

When is the study starting and how long is it expected to run for?
November 2013 to June 2017

Who is funding the study?
1. Norwegian Institute of Public Health, Oslo (Norway)
2. European Commission Seventh Framework Programme (Belgium).

Who is the main contact?
Dr Andrew David Oxman

Trial website

Contact information

Type

Public

Primary contact

Dr Andrew David Oxman

ORCID ID

http://orcid.org/0000-0002-5608-5061

Contact details

Norwegian Institute of Public Health
PO Box 4404
Nydalen
Oslo
N-0403
Norway

Type

Scientific

Additional contact

Dr Andrew David Oxman

ORCID ID

http://orcid.org/0000-0002-5608-5061

Contact details

Norwegian Institute of Public Health
PO Box 4404
Nydalen
Oslo
N-0403
Norway

Additional identifiers

EudraCT number

ClinicalTrials.gov number

Protocol/serial number

N/A

Study information

Scientific title

A comparative evaluation of the PDQ-Evidence database: a crossover randomised controlled trial

Acronym

Study hypothesis

When searching for systematic reviews about health systems, PDQ-Evidence is more comprehensive, easier and quicker to use compared to the Cochrane Library, EVIPNet, Google Scholar, Health Systems Evidence, PubMed, or Trip database.

Ethics approval

Regional Committee for Medical and Health Research Ethics, section South-East B, Oslo, Norway, 20/05/2014, ref: IRB 0000 1870

Study design

Interventional. Crossover RCT. Single-centre.

Primary study design

Interventional

Secondary study design

Randomised controlled trial

Trial setting

Internet

Trial type

Other

Patient information sheet

No participant information sheet available’

Condition

Access to systematic reviews about health systems

Intervention

Searching for systematic reviews about health systems using PDQ-Evidence and two of the following databases/search engines: Cochrane Library, EVIPNet, Google Scholar, Health Systems Evidence, PubMed, Trip database. Participants were randomised to either search PDQ-Evidence first or last.

Intervention type

Other

Phase

Drug names

Primary outcome measures

1. Was a systematic review that addresses the question found (Yes/No)? For the comparison databases (the two databases selected by the participants) this outcome will be defined as: “Was a systematic review that addresses the question found in either of the two databases?”
2. Time taken to find a systematic review that addresses the question

Method: self reporting
Time: measured once

Secondary outcome measures

1. Number of relevant systematic reviews found
2. Assessments of the databases with four response options:
2.1. Ease of use (from very difficult to very easy)
2.2. Time spent on searching (from much too much time to very little time)

Method: self reporting
Time: measured once

Overall trial start date

01/11/2013

Overall trial end date

30/06/2017

Reason abandoned

Eligibility

Participant inclusion criteria

1. Healthcare policy makers
2. Health managers
3. Health researchers
4. Health professionals

Participant type

Mixed

Age group

Adult

Gender

Both

Target number of participants

94

Participant exclusion criteria

1. Not healthcare policy makers
2. Not health managers
3. Not health researchers
4. Not health professionals

Recruitment start date

03/11/2014

Recruitment end date

17/02/2015

Locations

Countries of recruitment

Argentina, Bangladesh, Brazil, Cameroon, Canada, Chile, China, India, Iran, Italy, Japan, Kenya, Lebanon, Malawi, Nigeria, Norway, Pakistan, Senegal, South Africa, Spain, Sweden, Switzerland, Uganda, United Kingdom, United States of America

Trial participating centre

Norwegian Institute of Public Health
PO Box 4404 Nydalen
Oslo
N-0403
Norway

Sponsor information

Organisation

Norwegian Institute of Public Health

Sponsor details

PO Box 4404 Nydalen
Oslo
N-0403
Norway
+47 23 25 50 00
post@nokc.no

Sponsor type

Government

Website

www.fhi.no/

Funders

Funder type

Government

Funder name

Norwegian Institute of Public Health

Alternative name(s)

Funding Body Type

Funding Body Subtype

Location

Funder name

Seventh Framework Programme

Alternative name(s)

EC Seventh Framework Programme, European Commission Seventh Framework Programme, EU Seventh Framework Programme, European Union Seventh Framework Programme, FP7

Funding Body Type

government organisation

Funding Body Subtype

Federal/National Government

Location

Results and Publications

Publication and dissemination plan

Planned publication in a peer reviewed journal by the end of 2017.

IPD sharing statement:
The datasets generated during and/or analysed during the current study are/will be available upon request from: marit.johansen@fhi.no

Intention to publish date

31/12/2017

Participant level data

Available on request

Results - basic reporting

Publication summary

Publication citations

Additional files

Editorial Notes

02/08/2017: Confirmed with PI that the trial has been completed and is awaiting publication. The Plain English summary has been updated. The overall trial end date has been updated from 17/02/2015 to 30/06/2017. Participant information sheet has been updated. Norwegian Knowledge Centre for the Health Services has been replaced as Norwegian Institute of Public Health as a trial participating centre and sponsor/funder. Intention to publish date has been updated from 31/12/2015 to 31/12/2017. The publication and dissemination plan and participant level data sharing plan have been updated. The study contacts have had their addresses changed from the Norwegian Knowledge Centre for the Health Services and has been replaced with Norwegian Institute of Public Health. Andrew David Oxman email has been udpated from aox@nokc.no to oxman@online.no. Marit Johansen has been updated from maj@nokc.no to marit.johansen@fhi.no. 07/07/2017: No publications found in PubMed, verifying study status with principal investigator.