From: Development of a factorial survey for use in an international study examining clinicians’ likelihood to support the decision to initiate invasive long-term ventilation for a child (the TechChild study)
Survey
Number of factors
Levels of factors
Vignette population
Infant (6–24 months)
10
3x2x3x4x4x2x2x2x4x3
27,648
Child and Adolescent (8–16 years)
11
4x2x3x4x4x3x2x2x2x4x3
110,592
Adolescent (13–17 years)
3x2x3x4x4x3x2x2x2x4x3
82,944