Table 2.

Measurement definitions.

	Knowledge metrics	Understandability	Trust	Preference	Psychological reactions
Barajas et al. [20]	—	Discussion about the content of the tool	—	Discussion about the content of the tool	Discussion about openness to testing
Brewer et al. [23]	1. Gist recall: low/med/high risk 2. Verbatim recall: risk percentage	1. “How confident are you that you understand this test result?” 2. “How easy was this test result to understand?”	“How much do you trust that this test result is accurate?”	Rank 6 formats from liked most to liked least	—
Giuse et al. [18]	Before and after 10-question knowledge quiz about genetics, the disease, and the mutation		—	—	—
Kaphingst et al. [19]	1. Free recall 2. Prompted recall	Likert-scale ratings of the deterministic nature of results	Likert-scale ratings of the believability, reliability, completeness, helpfulness, difficulty, and accuracy of the information	—	Adapted Positive and Negative Affect Scale [25]
Leighton et al. [16]	Specifics unavailable, compared perceived risk between general public and genetic counselors	Specifics unavailable	Belief that results would be helpful in deciding future medical management	—	Level of concern
Liang et al. [27]	Free recall	Discussion about understanding of somatic tumor screening	Discussion about views, perceived advantages and disadvantages of somatic tumor screening	Discussion about information and communication preferences	Discussion about psychological support needs
Olson et al. [26]	Questionnaire	Questionnaire	Likert-scale ratings of participant attitudes and usefulness of pharmacogenomics testing	Open-end questions about improvement of results letter	Question about opening to encourage others to get pharmacogenomic testing
Ostergen et al. [22]	Accuracy scores	Likert-scale ratings of the deterministic nature of results	Likert-scale ratings of the believability, reliability, completeness, helpfulness, difficulty, and accuracy of the information	—	—
Shaer et al. [24]	Questionnaire	Questionnaire	—	Questionnaire
Stuckey et al. [21]	—	Discussion and interview questions about the content	—	Discussion about content	Discussion about desire for Next Steps