Table 1 Attributes and levels in choice questions
Attribute | Level 1 (ref) | Level 2 | Level 3 | Level 4 |
|---|---|---|---|---|
Physical functional capacity: My ability to perform daily physical chores and activities (such as work, studies and household, family and leisure activities). Imagine a scale where the starting point is when your treatment is not working. The distance to full physical functional capacity is presented as percentages with the following levels: | Improved by 25% | Improved by 50% | Improved by 75% | Full functional capacity 100% |
Psychosocial functional capacity: How I feel about life and my ability to manage daily psychosocial activities. Imagine a scale where the starting point is when you feel mentally bad about yourself. The distance to full psychosocial functional capacity is presented as percentages with the following levels: | Improved by 25% | Improved by 50% | Improved by 75% | Full functional capacity 100% |
Frequency of mild side effects: Mild side effects are often temporary and go away after a couple of days. Some examples of mild side effects are headache and nausea. People can experience side effects in different ways. The levels are described as: | Low, a few times during a 3-month | Medium, a few times during a month | High, a few times during a week period | |
Likelihood of severe side effects: The likelihood of getting a severe side effect, such as a serious infection or an allergic reaction can differ between therapies. The levels are described as: | Rare, 1 out of 1,000 can get the side effect | Common, 1 out of 100 can get the side effect | Very common, 1 out of 10 can get the side effect |