Table 1. Inclusion and Exclusion Criteria for Studies of Conjoint Analysis Methods and Discrete-Choice Experiments, Stated Preference for Cancer Screening, Systematic Review, 1990–2013.

Criterion	Inclusion	Exclusion
Population	Patients	All other populations (eg, physicians only)
Intervention	Breast, colorectal, and cervical cancer screening recommended by the US Preventive Services Task Force	Other screening, prevention, treatment, or systems interventions
Comparator	None specified	None specified
Outcomes (primary)	Attributes included in conjoint analysis or discrete-choice experiment design; use of opt-out questions	All other
Timing	January 1990 through July 2013	Before January 1990 or after July 2013
Setting	All settings	None
Study design	Conjoint analysis or discrete-choice experiment studies	All other studies
Language	English	Non-English