Table 1 List of attributes and attribute levels used in constructing the discrete-choice experiment
Attribute | Attribute level |
|---|---|
Chance that the condition will develop | 90% |
75% | |
50% | |
10% | |
Age of onset | Less than 1 year old |
1 to 5 years old | |
6 to 12 years old | |
13 to 18 years old | |
Speed at which the condition may get worse | Rapid |
Moderate | |
Slow | |
Stable | |
Options to improve quality of life | Limited options available |
Effective options available | |
Level of mental disability | Severe |
Mild to moderate | |
None | |
Level of physical disability | Severe |
Mild to moderate | |
None | |
Shortened | |
Normal |
