Randomised controlled trials (RCTs) that compared care for people with type 2 diabetes with or without use of a computerised decision support system were eligible. Trials had to be of systems developed for use in general practice/primary care. A definition of a computerised decision support system was provided in the paper. Trials could report process of care and/or patient outcomes. Trials had to have follow-up of at least six months.
Included trials were conducted in the UK, USA (private and public healthcare), Canada, Korea and several European countries. Most trials compared a computerised decision support system, with or without other interventions such as reminders, with usual diabetes care.
Two reviewers independently selected studies for inclusion. Disagreements were resolved by discussion or by consulting a third reviewer.