COVID-19 studies are our top priority. For all other studies, we recommend commencing the registration process concurrently with your ethics submission and allowing at least 8 weeks for registration to be completed from date of first submission as we are experiencing 4 week turn-around time in review of submissions and resubmissions. We currently do not have the capacity to expedite reviews.

Note also there are additional delays to review of updates. We appreciate your patience.

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been endorsed by the ANZCTR. Before participating in a study, talk to your health care provider and refer to this information for consumers
Trial registered on ANZCTR

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

Titles & IDs
Public title
What test is best for you? A bowel cancer family history risk website for patients and their GP's.
Scientific title
A Randomised trial of consumer-led familial cancer risk tool & GP triage on risk-appropriate colorectal cancer screening
Secondary ID [1] 259910 0
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Bowel (Colorectal) Cancer 265519 0
Condition category
Condition code
Cancer 265670 265670 0 0
Bowel - Back passage (rectum) or large bowel (colon)
Public Health 265671 265671 0 0

Study type
Description of intervention(s) / exposure
Individuals from intervention General Practices who opt in to the study will be given a password, allowing them to access the ‘Family History Website’ tool. This online tool will collect information about their family history of colorectal cancer and encourage discussion with their relatives so that they can gather accurate information. Upon completion of the questionnaire, individuals will be assigned to a NHMRC designated risk category for developing CRC, which will be accompanied by the appropriate screening recommendations, with a personalised summary of their information. This information will be accessible to their GP via a shared access facility, and participants will be encouraged to discuss their results with their GP within the following consultation. The completion of the family history website and GP consultation thereafter, is known as Assessment 1 at time = 0. Participants will be followed up 12 months after their completion of the ‘Family History Website’, where they will be required to self report their five year screening behaviour; while their GP’s will complete a file audit and a survey about the utility of the ‘Family History Website’ tool in addition to their knowledge about CRC risk and screening guidelines. This will be known as assessment 2 at time =1
Intervention code [1] 264335 0
Early detection / Screening
Intervention code [2] 264338 0
Comparator / control treatment
Individuals from control practices will not be contacted or recruited until time =1, 12 months after the intervention group opt in to the study. At time=1, control participants will be recruited and their self report five year screening behaviour will be recorded, along with a GP file audit, their known family history and demographic information such as age, gender and educational attainment. Consequently, screening behaviour will be measured during the same time for both the intervention and control groups. GP’s from control practices will also be surveyed about their knowledge about CRC risk and screening guidelines. Following the reporting of screening behaviour and the GP survey at time=1, the control group and their GP’s will be able to access ‘Family History Website’ tool if they so wish.
Control group

Primary outcome [1] 266449 0
Outcome Aim: Risk appropriate screening uptake as measured by the participants' five year screening behaviour in relation to their colorectal cancer risk category

Five year screening behaviour- All participants will have their five year screening behaviour recorded at time=1 by self report
Timepoint [1] 266449 0
12 to 18 months after randomisation, t=1
Primary outcome [2] 266450 0
Colorectal cancer risk category- Intervention practice participants will receive a CRC risk category after completing the 'Family History Website' tool., at some time within the 12 month time period t=0. However, participants from control practices will asked about their 'known family history' at time=1, and will not be allowed access to the 'Family History Website' tool, until after that information is collected.
Timepoint [2] 266450 0
Within 12 months of the intervention , t=0 for the intervention group and one year after randomisation, t=1 for the control group
Secondary outcome [1] 273799 0
GP audit and survey- The GP audit will serve to validate self reported screening behaviour for both groups. The GP survey will collect valuable primary care feedback regarding the utility of the family history website (intervention group only), and gauge GP's general awareness of family history risks and current screening recommendations. Additionally, practice demographic information and related characteristics will be recorded. This will also serve as a form of continuing education for GP's and they will be eligible to receive QA and CME points for participating in the study.
Timepoint [1] 273799 0
12 to 18 months after randomisation, t=1.
Secondary outcome [2] 273800 0
Participants demographic information- Demographic information from participants will collected from intervention and control participants. This information will include socio-economic (educational attainment and employment status), gender, family size, age and ethnicity status.
Timepoint [2] 273800 0
This will be collected when participants self report their five year screening behaviour 12 to 18 months after randomisation, t=1.

Key inclusion criteria
25-74 year olds living in Australia, who are able to give informed consent and have English language literacy, with no prior diagnosis of colorectal cancer.
Minimum age
25 Years
Maximum age
74 Years
Both males and females
Can healthy volunteers participate?
Key exclusion criteria
- Individuals under 25 or over 74 years of age
- A previous/current diagnosis of colorectal cancer
- No internet access
- Inability to read/or write English at a year 8 level

Study design
Purpose of the study
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
This is a random clustered trial, and recruitment will be randomised by practice not participants. General Practices will be sent a letter of invitation. If they agree to participate they will be randomly divided between control and intervention practices. Practices will be expected to be involved in the study at some time over a 12 to 18 month period and will be blind to allocation. Participants will receive an invitation of participation in the study, from their GP practice. Intervention practices will be contacted at t=0 to send out letters of invitation and control practices 12 to 18 months later. Allocation is not concealed from the researchers as this will be required for follow- up.
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
GP Practices that opt in to the study will be entered into a database and assigned to intervention or controlled group using a random sequence generator.
Masking / blinding
Blinded (masking 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)

Funding & Sponsors
Funding source category [1] 264798 0
Government body
Name [1] 264798 0
Cancer Australia
Address [1] 264798 0
Postal address: PO Box 1201, DICKSON ACT 2602
Country [1] 264798 0
Primary sponsor type
University of Sydney
The University of Sydney
School of Public Health
Sydney Medical School
Rm 125, Lvl 1, Edward Ford Building A27
NSW 2006
Secondary sponsor category [1] 263910 0
Name [1] 263910 0
Address [1] 263910 0
Country [1] 263910 0

Ethics approval
Ethics application status
Ethics committee name [1] 266772 0
Human Research Ethics Committee at the University of Sydney
Ethics committee address [1] 266772 0
Ethics committee country [1] 266772 0
Date submitted for ethics approval [1] 266772 0
Approval date [1] 266772 0
Ethics approval number [1] 266772 0

Brief summary
The study will evlaute if implementing a web based tool allowing consumers time to gather information about their family history of bowel (colorectal) cancer , (to be used in conjunction with GP triage), will reduce the proportion of average risk people having an unnecessary colonoscopy; while correctly indentifying and appropriately referring at-risk individuals to Familial Cancer Services and/or offering a colonoscopy. It aims to significantly reduce the public burden of bowel cancer by ensuring that the most effective screening can take place.
Trial website
Trial related presentations / publications
S. Naicker, L. Trevena, B. Meiser, A. Goodwin, T. Dobbins, K. Barlow-Stewart, A. O’Brien, J. Emery, M. Pirotta, J. Kirk. “What test is best for you?” - Evaluating a Family History Assessment tool to assist GP triage in appropriately screening for Colorectal Cancer, Primary Healthcare Conference 2011 Abstracts: Posters, Brisbane, QLD (2011).

S. Naicker, L. Trevena, B. Meiser, A. Goodwin, T. Dobbins, K. Barlow-Stewart, , J. Emery, M. Pirotta, J. Kirk , Developing a consumer-led online familial cancer risk in screening for bowel cancer, Emerging Health Policy Research Conference, University of Sydney (2011).

S. Naicker, L. Trevena, B. Meiser, A. Goodwin, T. Dobbins, K. Barlow-Stewart, , J. Emery, M. Pirotta, J. Kirk. A pilot study to evaluate the utility of an online familial risk tool to screen for colorectal cancer. COSA: Annual scientific meeting 2011 Abstracts: posters, Perth, WA (2011).

S. Naicker, L. Trevena, B. Meiser, A. Goodwin, T. Dobbins, K. Barlow-Stewart, , J. Emery, M. Pirotta, J. Kirk. Implementation of a consumer led online familial risk tool to screen for colorectal cancer: Implications and findings, CRN Postgraduate Research Symposium, University of Sydney, (2011).
Public notes

Principal investigator
Name 32434 0
Address 32434 0
Country 32434 0
Phone 32434 0
Fax 32434 0
Email 32434 0
Contact person for public queries
Name 15681 0
Angela O'Brien-Research Assistant
Address 15681 0
School of Public Health
Sydney Medical School
Rm 125, Lvl 1, Edward Ford Building A27
The University of Sydney
NSW 2006
Country 15681 0
Phone 15681 0
+61 2 96367699
Fax 15681 0
Email 15681 0
Contact person for scientific queries
Name 6609 0
Associate Professor Lyndal Trevena- Chief Investigator
Address 6609 0
Associate Professor Lyndal Trevena
Sydney School of Public Health
Director, Office for Global Health
Sydney Medical School,
Room 321b, Edward Ford Building (A27)
The University of Sydney
NSW 2006
Country 6609 0
Phone 6609 0
+61 2 9351 7788
Fax 6609 0
Email 6609 0

No information has been provided regarding IPD availability
Summary results
No Results