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Table 1 DCE attributes and levels

From: Patient and physician preferences for non-invasive diagnostic cardiovascular imaging technologies: a discrete choice experiment

Attributes Levels
Type of procedure Exercising; pharmacological agents; breathing maneuvers
Duration 30 min; 60 min
Patient out-of-pocket cost $500; $1000; $1500; $2000
Type of scanner No scanner; Partial body scanner; Complete body scanner
Risks and side effects Possible tingling in the fingers, dizziness and dry mouth; Possible chest pain, irregular heartbeat, flushing, and breathing difficulties and a 0.1% (1 in 1000) chance of serious complications such as heart attack; Exposure to radiation and a 0.1% (1 in 1000) increase in cancer risk
Diagnostic accuracy 90%; 80%; 70%
  1. Six attributes were drawn to characterize cardiovascular imaging tests. Between two and four levels were applied to each attribute