. 2020 May 6;22(8):1311–1319. doi: 10.1038/s41436-020-0809-2

Table 1.

Attributes and attribute levels included in the discrete choice experiment (DCE).

Characteristics	Levels
1. Chance of having a genetic condition	5 out of 100
	10 out of 100
	30 out of 100
	50 out of 100
	75 out of 100
2. Severity of the condition	Mild
	Moderate
	Severe
3. Availability of preventive or treatment options	No options are available
	Treatments to improve the condition are available
	Treatments to cure or prevent the condition are available
4. Improving the process of medical care	Not likely
	Somewhat likely
	Very likely
5. Cost of testing to you (% of annual household income)^a,b	0.20%
	1%
	3%
	5%
6. Disclosure of test results to others	Not required
6. Disclosure of test results to others	May be required to a life insurer
7. Disclosure of secondary findings to you	No
7. Disclosure of secondary findings to you	Yes

^aIn choice tasks, percentages were pivoted based on individual’s reported annual household income. Thus, participants were given an actual cost figure (in Australian dollars) that was relative to their income.

^bMean cost after incorporating income adjustments, across the three surveys, was $1840 (SD = $2080). The median cost was $900 (interquartile range = $300 to $2500).