Table 1

Example of a discrete choice experiment for bariatric surgery

Individual AIndividual B
Current level of obesityObesity (BMI 30 to less than 40 kg/m2)Very severe obesity (BMI greater than 50 kg/m2)
Diagnosed with type 2 diabetesNoYes
Age of person needing surgery (years)5035
Effectiveness of surgery for weight loss at 2 years (%)7050
Failure to respond to prescribed lifestyle interventionNoYes
Time spent on waiting list2 years6 months
Who should have their surgery now?Individual A
Individual B
  • BMI, body mass index.