|
Validity
|
A study is valid if the preferences it measures are the same as the preferences that people have in the real world
|
Low
|
2.4
|
(2.2, 2.6)
|
[4, 26]
|
|
Med
|
|
High
|
|
Relevance
|
A study needs to measure preferences that are relevant to patients and the disease it studies
|
Low
|
1.8
|
(1.7, 1.9)
|
[26, 27]
|
|
Med
|
|
High
|
|
Bias
|
A study should not try to influence people’s responses by pushing people to answer in a specific way. A biased study might not measure actual preferences
|
Low
|
1.7
|
(1.6, 1.8)
|
[26]
|
|
Med
|
|
High
|
|
Burden
|
A study can be easy or difficult to complete. This is related to the number of questions and the number and types of characteristics people have to think about
|
Low
|
1.2
|
(1.1, 1.3)
|
[26, 27]
|
|
Med
|
|
High
|
|
Time
|
How long it takes to complete a preference study
|
15 min
|
1.1
|
(1.1, 1.2)
|
[27]
|
|
30 min
|
|
45 min
|
|
Payment
|
How much people get paid to complete a preference study in USD
|
$0
|
1.4
|
(1.3, 1.6)
|
[27]
|
|
$25
|
|
$50
|
