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A Randomised Controlled Trial of a Bowel Cancer Screening Decision Aid for Adults With Low Education and Literacy

55 Years
64 Years
Open (Enrolling)
Colorectal Neoplasms

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Trial Information

A Randomised Controlled Trial of a Bowel Cancer Screening Decision Aid for Adults With Low Education and Literacy

Several countries have recently implemented national bowel cancer screening programs. To
ensure equal access to screening, consumer information is needed to suit adults ranging in
literacy level. Decision aids (DAs) are tools which have been developed to assist patients
and consumers make informed health decisions and encourage active participation in health
care decisions. Their use in a wide range of clinical settings has increased dramatically.
However, most DAs are highly dependent upon high levels of literacy and numeracy, and few
have been developed for low literacy populations.

This primary aims of this study are to assess the impact of the decision aid on (1) the
proportion of adults who make an informed choice about bowel cancer screening (using faecal
occult blood test) and, (2) the level of involvement in screening decisions among adults
with lower levels of education and literacy.

There are three secondary aims of the study. First, to measure the effect of the decision
support tool on decisional conflict, decision satisfaction, anxiety, and bowel cancer worry.
Second, to identify participant's screening interest, intentions and behavior. Thirdly, we
will explore participant's reactions towards the information materials they receive and
whether the doctor influenced their screening decision.

Inclusion Criteria:

- Men and women aged 55-64 years

- Lower levels of education

- English as a main language spoken at home

- Average risk of bowel cancer

Exclusion Criteria:

- Higher levels of education

- Invitation to take part in bowel cancer screening in last two years

- Personal or strong family history of bowel cancer

- Had a bowel cancer screening test in the last two years

Type of Study:


Study Design:

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Subject), Primary Purpose: Prevention

Outcome Measure:

Informed choice

Outcome Time Frame:

2 weeks post intervention

Safety Issue:


Principal Investigator

McCaffery J Kirsten, PhD

Investigator Role:

Principal Investigator

Investigator Affiliation:

University of Sydney


Australia: Human Research Ethics Committee

Study ID:




Start Date:

July 2008

Completion Date:

February 2009

Related Keywords:

  • Colorectal Neoplasms
  • Decision support techniques
  • Neoplasms
  • Colorectal Neoplasms