Example of a discrete choice experiment for bariatric surgery
| Individual A | Individual B | |
|---|---|---|
| Current level of obesity | Obesity (BMI 30 to less than 40 kg/m2) | Very severe obesity (BMI greater than 50 kg/m2) |
| Diagnosed with type 2 diabetes | No | Yes |
| Age of person needing surgery (years) | 50 | 35 |
| Effectiveness of surgery for weight loss at 2 years (%) | 70 | 50 |
| Failure to respond to prescribed lifestyle intervention | No | Yes |
| Time spent on waiting list | 2 years | 6 months |
| Who should have their surgery now? | Individual A □ | Individual B □ |
BMI, body mass index.