Table 1

 Trial interventions

GuidelinesComputerised decision aid
Administered byDoctor trained to deliver recommendation from guidelinesDoctor trained to use computerised decision aid
FormatDoctor held guidelines derived from decision analysisComputerised decision aid with two components
1. Individualised risks and benefits
2. Shared decision-making section
Mode of deliveryRecommendation for treatment based on guidelinesShared decision-making
Median duration (interquartile range) of consultation21 (19–26) minutes31 (16–41) minutes
Risk assessmentIndividualisedIndividualised
Individualised risk communicationNoGraphical and numerical
Values clarificationNoYes