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Trial registered on ANZCTR

Registration number
Ethics application status
Date submitted
Date registered
Date last updated
Type of registration
Retrospectively registered

Titles & IDs
Public title
Use of patient incentives to improve prevention of ischemic heart disease in general practice
Scientific title
The effectiveness of patient incentives to increase attendance for cardiovascular risk assessment in general practice
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
cardiovascular disease 2994 0
Condition category
Condition code
Cardiovascular 3144 3144 0 0
Coronary heart disease

Study type
Description of intervention(s) / exposure
Patient incentives for attendance for cardiovascular risk assessment
Patients will be sent a leter of invitation and given six months to attend their general practitioner.
The incentive is a $25 gift voucher.
Intervention code [1] 2735 0
Intervention code [2] 2736 0
Intervention code [3] 2756 0
Treatment: Surgery
Comparator / control treatment
no incentive for attendance for cardiovascular risk assessment
Control group

Primary outcome [1] 4028 0
Attendance for cardiovascular risk assessment to the patient's GP
An attendance slip is generated when the risk assessment is performed by the GP. The slip is collected by research staff during regular visits to particpating practices.
The risk assessment is confirmed when the medical record of consenting patients are audited 3-9 months after patients attend for their risk asessment.
Timepoint [1] 4028 0
The outcome is assessed when it occurs. Patients are allowed 6 months in which to attend their GP for a risk assessment. The visit is confirmed by a medical record audit that occurs within 3-9 months of the visit.
Secondary outcome [1] 6785 0
New Zealand absolute cardiovascular risk calculator
Timepoint [1] 6785 0
At the cardiovascular risk assessment.
The data will be obtained by the researcher at the time of the medical note audit 3-9 months after GP risk assessment.
Secondary outcome [2] 6812 0
Absolute cardiovascular risk of patients in the intervention and control groups
Timepoint [2] 6812 0
At the time of the risk assessment

Key inclusion criteria
Attendance at the general practice in the last 12 months
Literate in English
Minimum age
40 Years
Maximum age
75 Years
Both males and females
Can healthy volunteers participate?
Key exclusion criteria
Previous diagnosis of heart disease

Study design
Purpose of the study
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Concealed allocation
Practice databases were searched to identify patients aged 40-75 years without diagnosed heart disease. GPs reviewed the patient list to exclude those with serious illness, language barriers, or any other reason at the discretion of the GP. The list was further limited to include only one patient per household, by alternately selecting a male or female patient from a shared address. Within each practice eligible patients were allocated a number between 1 and 150 using a random number table.
An independant researcher at a central location determined that patients with numbers 1-60 were assigned to the intervention arm. Patients with numbers 61-150 were assigned to the control arm. Assignment was weighted to the control arm (3:2) because a lower participation rate was expected in this arm.
Patients were sent a letter of invitation to participate in the trial, and to attend their GP for cardiovascular risk assessment.
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Random number table created by computer software
Masking / blinding
Open (masking not used)
Who is / are masked / blinded?

Intervention assignment
Other design features
Not Applicable
Type of endpoint(s)
Statistical methods / analysis

Recruitment status
Date of first participant enrolment
Date of last participant enrolment
Date of last data collection
Sample size
Accrual to date
Recruitment in Australia
Recruitment state(s)
Recruitment postcode(s) [1] 641 0
Recruitment postcode(s) [2] 642 0

Funding & Sponsors
Funding source category [1] 3260 0
Name [1] 3260 0
Royal Australian College of General Practitioners
Address [1] 3260 0
College House, 1 Palmerston Crescent
South Melbourne VIC 3205
Country [1] 3260 0
Primary sponsor type
The University of Adelaide
North Terrace
SA 5005
Secondary sponsor category [1] 2914 0
Name [1] 2914 0
Address [1] 2914 0
Country [1] 2914 0

Ethics approval
Ethics application status
Ethics committee name [1] 5242 0
The University of Adelaide Human Research Ethics Committee
Ethics committee address [1] 5242 0
The University of Adelaide
North Tce
SA 5005
Ethics committee country [1] 5242 0
Date submitted for ethics approval [1] 5242 0
Approval date [1] 5242 0
Ethics approval number [1] 5242 0

Brief summary
The purpose of this pilot trial is to explore the effectiveness of a patient incentive for attendance for cardiovascular risk assessment in general practice. Our hypothesis is that a patient incentive will be effective in encouraging attendance for cardiovascular risk assessment in general practice. Strategies to increase attendance for risk assessment are a first step toward improved prevention of heart disease in general practice.
Trial website
Trial related presentations / publications
Public notes

Principal investigator
Name 28489 0
Address 28489 0
Country 28489 0
Phone 28489 0
Fax 28489 0
Email 28489 0
Contact person for public queries
Name 11646 0
Nigel Stocks
Address 11646 0
Discipline of General Practice
Level 3 Eleanor Harrald Building
Frome Road
The University of Adelaide
SA 5005
Country 11646 0
Phone 11646 0
08 8303 3460
Fax 11646 0
08 8303 3511
Email 11646 0
Contact person for scientific queries
Name 2574 0
Nigel Stocks
Address 2574 0
Discipline of General Practice
Level 3 Eleanor Harrald Building
Frome Road
The University of Adelaide
SA 5005
Country 2574 0
Phone 2574 0
08 8303 3460
Fax 2574 0
08 8303 3511
Email 2574 0

No information has been provided regarding IPD availability
Summary results
Have study results been published in a peer-reviewed journal?
Other publications
Have study results been made publicly available in another format?
Results – basic reporting
Results – plain English summary