A randomised controlled trial of the effect of providing online risk information and lifestyle advice for the most common preventable cancers

ISRCTN ISRCTN17450583
DOI https://doi.org/10.1186/ISRCTN17450583
Secondary identifying numbers 1.0
Submission date
05/01/2018
Registration date
30/01/2018
Last edited
28/02/2024
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Cancer
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Background and study aims
Previous research has shown that providing cancer risk information to people can improve their understanding of their risk of cancer, increase their intention to attend cancer screening, and increase their fruit and vegetable intake and physical activity. A risk calculator has been developed and tested based on modifiable behavioural risk factors, such as weight and smoking, which estimates the risk of an individual developing one of the five most common preventable cancers in the UK over a 10-year period. These cancers are lung, bowel, bladder, kidney and oesophageal cancer for men and breast, lung, bowel, endometrial and kidney cancer for women). Alongside 66 healthcare professionals who have taken part in focus groups and interviews, a web-based tool has been developed which allows people to enter details of their current lifestyle and then see their estimated risk of developing one of the cancers over the next 10 years, the effect changes in their lifestyle would make on that risk, and lifestyle advice. The aim of this study is to use that web-based tool to test whether people given their personalised cancer risk estimate in combination with lifestyle advice are more motivated to make changes in their behaviour than people given lifestyle advice alone. The study also compares different ways of presenting the risk information.

Who can participate?
Men and women aged 30-74 who do not have a past history of cancer

What does the study involve?
Participants answer a set of questions about their diet, lifestyle and beliefs about their risk of cancer. They are then randomly allocated to be presented with their personalised 10-year cancer risk and lifestyle advice, or go straight to the lifestyle advice without seeing their personalised risk. The cancer risk is presented in one of three formats. The first format is a bar chart, the second format is pictures of either 1000 or 100 faces depending on the individual's estimated risk, and the third format is a bar with a scale from below average to above average with arrows. Participants then answer a further set of questions about their thoughts about their risk of cancer and motivation to make lifestyle change. They are then asked if they agree to take part in a follow-up task 3 months later where they answer a similar set of questions to check how their lifestyle and ideas about cancer risk have changed with time. After completing that task, if they are one of the people who did not see their personalised risk in the first task, they are offered the opportunity to see it then.

What are the possible benefits and risks of participating?
The benefits are that participants receive a summary of their estimated risk of developing one of the five most common preventable cancers in the future and information about how they may be able to reduce that risk. Participation also provides an opportunity for people to contribute to and help influence cancer risk research. Being presented with the risk of developing cancer can be a sensitive or stressful issue. If participants become distressed by anything when completing the task they can exit it at any stage and there will be no consequences associated with doing so. Participants are also provided with details of how to access support if needed.

Where is the study run from?
University of Cambridge (UK)

When is the study starting and how long is it expected to run for?
November 2017 to October 2018

Who is funding the study?
1. Cancer Research UK
2. National Institute for Health Research (UK)

Who is the main contact?
Dr Juliet Usher-Smith
jau20@medschl.cam.ac.uk

Contact information

Dr Juliet Usher-Smith
Scientific

The Primary Care Unit
Department of Public Health and Primary Care
Box 113 Cambridge Biomedical Campus
Cambridge
CB2 0SR
United Kingdom

ORCiD logoORCID ID 0000-0002-8501-2531
Phone +44 (0)1223 748 693
Email jau20@medschl.cam.ac.uk

Study information

Study designParallel-group open randomised controlled trial
Primary study designInterventional
Secondary study designRandomised parallel trial
Study setting(s)Internet/virtual
Study typePrevention
Participant information sheet ISRCTN17450583_PIS_ModelConsentForm.pdf
Scientific titleA randomised controlled trial of an online risk information and lifestyle advice intervention for the most common preventable cancers
Study acronymI-CaPP online trial
Study objectivesTo assess whether communicating a personalised cancer risk estimate based on modifiable lifestyle factors in combination with lifestyle advice motivates greater change in behaviour than lifestyle advice alone. Secondary objectives are to determine the effects of personalised cancer risk information on risk perception and psychological well-being and compare the impact of different formats of risk information.
Ethics approval(s)Psychology Research Ethics committee of the University of Cambridge, 12/12/2017, ref: PRE.2017.093
Health condition(s) or problem(s) studiedLifestyle behaviours that influence risk of the five most common preventable cancers in the UK (lung, colorectal, bladder, kidney and oesophageal for men and breast, lung, colorectal, endometrial and kidney for women)
InterventionParticipants will first be asked to complete an online consent form. They will then answer a set of questions about their diet, lifestyle and beliefs about their risk of cancer. They will then be randomised 1:1:1:1 with stratification by risk relative to an individual with a recommended lifestyle and age (Added 21/02/2018: Participants are also stratified by sex):
1. A control group who receive cancer specific web-based lifestyle advice alone
2. One of three intervention groups who receive the same web-based lifestyle advice alongside their estimated 10 year risk of developing one of the five most common preventable cancers in one of three different formats:
2.1. The first format is a bar chart showing current estimated risk, new estimated risk after setting lifestyle targets, and risk if they followed a recommended lifestyle
2.2. The second is iconographs of either 1000 or 100 faces depending on the individuals estimated risk again for current estimated risk, new estimated risk after setting lifestyle targets and risk if they followed a recommended lifestyle
2.3. The third is a bar with a qualitative scale from below average to above average with arrows showing current estimated risk, new estimated risk after setting lifestyle targets and risk if they followed a recommended lifestyle

Participants will then answer a further set of questions about their thoughts about their risk of cancer and motivation to make lifestyle change. They will then be asked if they agree to take part in a follow up task 3 months later where they will answer a similar set of questions to check how your lifestyle and ideas about cancer risk have changed with time. After completing that task, if they were one of the people who did not see their personalised risk in the first task, they will be offered the opportunity to see it then.
Intervention typeBehavioural
Primary outcome measureChange in risk relative to an individual with a recommended lifestyle, measured via self-report of lifestyle at 3 months
Secondary outcome measuresMeasured immediately after the intervention and again at 3 months, all measured via self-report:
1. Perceived risk of cancer
2. intention to change behaviour
3. Anxiety, measured using the six-item Spielberger State-Trait Anxiety inventory
4. Cancer-related worry, measured using the Lerman cancer worry scale
5. Awareness of cancer risk factors, measured using question 6 from the Cancer Awareness Measure
Overall study start date01/11/2017
Completion date31/10/2018

Eligibility

Participant type(s)Healthy volunteer
Age groupAdult
SexBoth
Target number of participants1000
Total final enrolment1018
Key inclusion criteria1. 30-74 years of age
2. Resident in the UK
3. Registered with Prolific
4. Prolific approval rating ≥95%
Key exclusion criteriaPast history of cancer
Date of first enrolment01/03/2018
Date of final enrolment01/04/2018

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

University of Cambridge
The Primary Care Unit
Department of Public Health and Primary Care
Cambridge
CB2 0SR
United Kingdom

Sponsor information

University of Cambridge
University/education

School of Clinical Medicine
Box 111, Cambridge Biomedical Campus
Cambridge
CB2 0SP
England
United Kingdom

ROR logo "ROR" https://ror.org/013meh722

Funders

Funder type

Charity

Cancer Research UK
Private sector organisation / Other non-profit organizations
Alternative name(s)
CR_UK, Cancer Research UK - London, CRUK
Location
United Kingdom
National Institute for Health Research
Government organisation / National government
Alternative name(s)
National Institute for Health Research, NIHR Research, NIHRresearch, NIHR - National Institute for Health Research, NIHR (The National Institute for Health and Care Research), NIHR
Location
United Kingdom

Results and Publications

Intention to publish date01/02/2020
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryStored in repository
Publication and dissemination planPlanned publication of the protocol in a peer-reviewed journal before completion of recruitment which will then be available online. Planned publication of the findings in high-impact peer reviewed journals.
IPD sharing planThe anonymised patient level data will be stored in the University of Cambridge data repository (https://www.repository.cam.ac.uk). It will be open access and available to researchers approximately 2 years after the completion of the study. The trialists have submitted an amendment to the ethics committee to obtain patient consent for this.

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 01/09/2020 05/08/2020 Yes No
Protocol article 26/06/2018 10/08/2022 Yes No
Participant information sheet 28/02/2024 No Yes

Additional files

ISRCTN17450583_PIS_ModelConsentForm.pdf

Editorial Notes

28/02/2024: Patient information sheet and model consent form added.
10/08/2022: Publication reference added.
05/08/2020: Publication reference added.
08/10/2019: The following changes were made to the trial record:
1. The total final enrolment number was added.
2. The intention to publish date was changed from 01/08/2019 to 01/02/2020.
13/07/2018: The overall trial end date was changed from 01/08/2018 to 31/10/2018.
21/02/2018: The interventions have been updated.