Bridging the intention-behaviour gap: promoting compliance with medication for coronary heart disease

ISRCTN ISRCTN29760311
DOI https://doi.org/10.1186/ISRCTN29760311
Secondary identifying numbers RRCC218LG
Submission date
23/01/2004
Registration date
23/01/2004
Last edited
19/10/2011
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Circulatory System
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Not provided at time of registration

Contact information

Dr Rebecca Lawton
Scientific

University of Leeds
School of Psychology
Leeds
LS2 9TJ
United Kingdom

Phone +44 (0)113 343 5715
Email r.j.lawton@leeds.ac.uk

Study information

Study designRandomised controlled trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Not specified
Study typeTreatment
Scientific title
Study objectivesTo test whether: implementation intention strategies increase three-month compliance to prescribed medicines among patients in primary care compared to those control group patients using their usual strategies.

Do implementation intentions increase adherence to medication prescribed for coronary heart disease? N.B. The pilot study revealed problems with recruiting non-adherent participants. Two alternative studies were, therefore, administered.
Ethics approval(s)Not provided at time of registration
Health condition(s) or problem(s) studiedCardiovascular diseases: Heart disease
InterventionBoth studies were randomly controlled trials:
Study 1:
120 cardiac patients were recruited and randomised into three groups (control, Theory of Planned Behaviour (TPB) questionnaire only, TPB questionnaire + formed implementation intention). They were telephoned at 7, 28 and 90 days post-recruitment. Fruit and vegetable consumption was recorded at recruitment and at each of the follow-up time points. 97 participants completed the study.

Study 2:
249 patients presenting with a prescription for antibiotics were recruited and randomised into four groups (control, TPB questionnaire only, TPB questionnaire + formed own implementation intention, TPB questionnaire + researcher provided implementation intention). They were telephoned on the day after their antibiotics were due to be completed to record their adherence to the medication. A fifth group of participants was recruited who only received the follow-up telephone call. 241participants completed the study.
Intervention typeOther
Primary outcome measureStudy 1: Daily fruit and vegetable consumption (self-report and 24-hour recall)
Study 2: Adherence to antibiotics (self-report and pill count)
Secondary outcome measuresNot provided at time of registration
Overall study start date01/10/2001
Completion date31/10/2003

Eligibility

Participant type(s)Patient
Age groupAdult
SexBoth
Target number of participants370
Key inclusion criteriaStudy 1: Patients attending a secondary prevention CHD clinic in primary care
Study 2: Patients presenting to a pharmacy with a prescription for an antibiotic
Key exclusion criteriaNot provided at time of registration
Date of first enrolment01/10/2001
Date of final enrolment31/10/2003

Locations

Countries of recruitment

  • England
  • United Kingdom

Study participating centre

University of Leeds
Leeds
LS2 9TJ
United Kingdom

Sponsor information

NHS R&D Regional Programme Register - Department of Health (UK)
Government

The Department of Health
Richmond House
79 Whitehall
London
SW1A 2NL
United Kingdom

Phone +44 (0)20 7307 2622
Email dhmail@doh.gsi.org.uk
Website http://www.doh.gov.uk

Funders

Funder type

Government

NHS Executive Northern and Yorkshire (UK)

No information available

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?
Results article Study 1: results 01/05/2005 Yes No
Results article Study 2: results 01/05/2006 Yes No