Design of the Month

Preventing diabetes in the local Bangladeshi community

The following quotation is taken from the May 2007 issue of The Bulletin of Queen Mary, University of London.

Colleagues ... are piloting how to best identify those at highest risk in the local Bangladeshi community using GP registers. They will then test the feasibility of interventions to prevent diabetes. In a factorial design, usual care provided by the GP will be compared to a behavioural change programme to improve lifestyle run by `lay tutors' attached to Social Action for Health; medication strategies and a mix of lifestyle education and medication.

  1. What are the observational units?
  2. What are the experimental units?
  3. What are the treatments and how many of them are there?
  4. Draw the Hasse diagram for the factors on the treatments.
  5. How should this trial be randomized?

Other designs

Page maintained by R. A. Bailey