Reducing Acute Coronary Syndrome Patient Delay

Summary

1. To test the effectiveness of the theory-based interventions (text+visual and text-only BCT-based interventions) against usual care in changing patients' intentions to phone ambulance immediately with symptoms of ACS ≥ 15 minutes duration.
2. To determine the most effective mode of delivery by comparing the text+visual BCT-based intervention with text-only BCT-based intervention.
3. To investigate any unintended consequences of the intervention on intentions to phone an ambulance for non-life-threatening symptoms.

Conditions

• Acute Coronary Syndrome

Interventions

BEHAVIORAL

Text+Visual BCT-based intervention

Participants in the visual intervention group will receive usual care specified below plus a specifically developed Text + Visual BCT-based intervention, comprising 12 BCTs identified from SR and expert consensus study. An animated video, just under 8 minutes in length is hosted online in the Intervention Modelling Experiment. The animation contains 9 of the 12 BCTs and tells the 'delay stories' of three different characters. It was not possible to deliver all of the 12 BCTs comprehensively in the relatively passive media of the animation as some techniques require active participation from participants (e.g. action planning). Thus, n=7 BCTs (1 2 Problem-solving; 1 4 Action planning; 5 2 Salience of consequences; 7 1 Prompts/cues; 9 3 Comparative imagining of future outcomes; 15 2 Mental rehearsal of successful performance) are also delivered via short web-based exercises which follow the animation.

BEHAVIORAL

Text-only BCT intervention

Participants in the text-only BCT-based intervention group will receive the usual care specified above plus a text-only BCT-based intervention. This was developed in the same way as the text + visual BCT-based intervention but does not include the visual elements (i.e. animation). Instead, the voiceover from the animated film is displayed in text on screen and narrated in audio. The BCTs which require active engagement are delivered via identical web-based exercises as the text + visual BCT-based intervention.

BEHAVIORAL

Leaflet information (control)

Participants in the control group will receive information that is currently used routinely in the NHS site to inform patients with ACS what to do if they experience symptoms after discharge.

Sponsors & Collaborators

• University of Stirling

  collaborator OTHER

• University of Aberdeen

  collaborator OTHER

• University of Dundee

  collaborator OTHER

• The University of New South Wales

  collaborator OTHER

• Edinburgh Napier University

  lead OTHER

Study Design

Allocation

RANDOMIZED

Purpose

SUPPORTIVE_CARE

Masking

DOUBLE

Model

PARALLEL

Eligibility

Min Age

18 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2017-02-20

Primary Completion

2017-10-31

Completion

2017-10-31

Countries

• United Kingdom

Study Locations