Table 1

Attributes and levels

Current level of obesity
  • Obesity (BMI 30 to less than 40 kg/m2)

  • Severe obesity (BMI 40 to less than 50 kg/m2)

  • Very severe obesity (BMI greater than 50 kg/m2)

Obesity-related conditions
  • Already has obesity-related conditions

  • Is at risk of developing obesity-related conditions

Age of person needing surgery
  • 20 years

  • 35 years

  • 50 years

Family history
  • At least one parent or sibling is obese, has had weight issues since childhood

  • No family history of obesity

Chance of maintaining a substantial (at least half) reduction in excess weight
  • 30%

  • 50%

  • 70%

Has shown commitment by responding to prescribed lifestyle intervention (ie, physical activity and diet)
  • Has maintained a healthy lifestyle plan for several months, resulting in some weight loss, however is still in need of surgery

  • Has not maintained a healthy lifestyle plan and has had no weight loss

Time already spent on surgery waiting list
  • 6 months

  • 1 year

  • 2 years

  • BMI, body mass index.