ISRCTN ISRCTN09650496
DOI https://doi.org/10.1186/ISRCTN09650496
Secondary identifying numbers R100621/136
Submission date
05/04/2011
Registration date
10/06/2011
Last edited
01/12/2016
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Nutritional, Metabolic, Endocrine
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Not provided at time of registration

Contact information

Dr Simon Griffin
Scientific

Institute of Metabolic Science
Box 285
Addenbrooke's Hospital
Hills Road
Cambridge
CB2 0QQ
United Kingdom

Phone +44 (0)122 333 0315
Email simon.griffin@mrc-epid.cam.ac.uk

Study information

Study designParallel-group randomised controlled trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typePrevention
Participant information sheet Not available in web format, please use the contact details to request a patient information sheet
Scientific titleEffect of communicating genetic and phenotypic risk for type 2 diabetes in combination with lifestyle advice on objectively measured physical activity: a randomised controlled trial
Study acronymDRCT
Study objectivesThe primary objective of the DRCT is to assess the effects of providing:
1. A genetic risk estimate for type 2 diabetes in combination with standard lifestyle advice
and
2. A phenotypic risk estimate for type 2 diabetes in combination with standard lifestyle advice on objectively measured physical activity
Ethics approval(s)Cambridgeshire 1 Research Ethics Committee, 21/10/2010, ref: 10/H0304/78
Health condition(s) or problem(s) studiedType 2 diabetes/physical activity/risk communication
InterventionParticipants are randomly allocated to one of three groups:

Intervention Group A: Participants receive a genetic risk estimate for type 2 diabetes based on 23 single nucleotide polymorphisms

Intervention Group B: Participants receive a phenotypic risk estimate based on age, sex, body mass index, family history of diabetes, smoking status, and prescription of steroid or anti-hypertensive medication

Control Group: Participants do not receive either of the risk estimates until after they have completed follow-up

Each group will receive standard lifestyle advice, which includes general information about type 2 diabetes as well as information about how to reduce the risk of developing the disease.
Intervention typeOther
Primary outcome measureObjectively measured physical activity energy expenditure over 1 week (8 weeks post-intervention), assessed using an Actiheart®
Secondary outcome measures1. Self-reported diet
2. Self-reported weight
3. Intentions to be physically active and to engage in a healthy diet
4. Anxiety
5. Diabetes-related worry
6. Self-rated health
7. Self-reported sedentary behaviour
8. Cognitive and emotional theory-based antecedents to health behaviour change
Overall study start date11/02/2011
Completion date11/02/2012

Eligibility

Participant type(s)Patient
Age groupAdult
SexBoth
Target number of participantsWe aim to collect outcome data on approximately 465 participants. Thus, assuming a 20% attrition rate, we will randomise approximately 580 participants in total.
Key inclusion criteriaResidents of Cambridgeshire, in the east of England, born between 1950 and 1975, are potentially eligible to participate in the Fenland Study. Participants of the Fenland Study are invited to take part in the DRCT if they:
1. Agreed to be contacted regarding potential involvement in future studies
2. Provided sufficient data to calculate genetic and phenotypic risk estimates for type 2 diabetes
3. Wore an Actiheart® for 3 or more full days without experiencing a severe rash
4. Returned an Actiheart® that recorded 36 or more hours of total data
Key exclusion criteriaResidents of Cambridgeshire are excluded from the Fenland Study by their GP if they:
1. Have diagnosed diabetes
2. Have a medical condition with a prognosis of less than 1 year
3. Suffer from psychotic illness
4. Are pregnant or lactating
5. Are unable to walk unaided

After participating in the Fenland Study, participants are excluded from the DRCT if they:
1. Have diagnosed diabetes
2. Are actively participating in another study
Date of first enrolment11/02/2011
Date of final enrolment11/02/2012

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

Addenbrooke's Hospital
Cambridge
CB2 0QQ
United Kingdom

Sponsor information

Medical Research Council (UK)
Research council

14th Floor
One Kemble Street
London
WC2B 4AN
United Kingdom

Phone +44 (0)179 341 6200
Email corporate@headoffice.mrc.ac.uk
Website http://www.mrc.ac.uk/index.htm
ROR logo "ROR" https://ror.org/03x94j517

Funders

Funder type

Research organisation

Medical Research Council (UK) Ref. R100621/136
Government organisation / National government
Alternative name(s)
Medical Research Council (United Kingdom), UK Medical Research Council, MRC
Location
United Kingdom

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
Publication and dissemination planNot provided at time of registration
IPD sharing plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Protocol article protocol 18/06/2012 Yes No
Results article results 29/11/2016 Yes No

Editorial Notes

01/12/2016: Publication reference added.