Table 1.

Consent 2.0 quantitative measures.

Content	Scale (administered to adolescents, parents, or both)	Description of items included
Demographics	ATNa data harmonization guidelines [33]	Age, race or ethnicity, sexual orientation, gender identity, education, employment, health insurance status, city, living situation
Socioeconomic status	FAS-IIIb (adolescents) [34,35]	Seven questions adapted from the FAS-III, measuring a family’s financial status based off of the number of vehicles, computers, bathrooms; adolescents having their own bedroom; if the family has a dishwasher; the number of times the family traveled outside the United States; and overall perception of the family’s financial status
Social support	MSPSSc—modified (adolescents) [36]	Four Likert questions on a 7-point scale ranging from very strongly disagree to very strongly agree, measuring parental support and relationships with adolescents
Parental monitoring	Parental monitoring scale—modified (adolescents and parents) [37]	Twenty-five statements on a 5-point scale ranging from strongly disagree to strongly agree, measuring parental knowledge, disclosure, solicitation, and control. Adolescent statements such as “My parent(s) know what I do during my free time.” Parent statements such as “I know what my teen does during their free time.”
Medical mistrust	The group-based medical mistrust scale—modified (adolescents and parents) [38]	Six 5-point Likert items that measure the degree to which the participant trusts medical researchers
Communication	Communication with parents (adolescents and parents) [39]	Five questions asking the number of times parents and adolescents have communicated about relationships, sex, sexually transmitted infections (HPVd and HIV), same-sex relationships, and using a condom. Answers range from Never, Once/twice, Many times, and Don’t know
Concern about HIV	HIV risk perception (adolescents and parents) [40]	Two 5-point Likert questions about adolescent worry of being infected with HIV/AIDS and parent worry of their adolescent being infected with HIV/AIDS
Sexual behavior	Sexual behavior (adolescents) [41]	Five questions for adolescents regarding sexual intercourse partners

^aATN: Adolescent Medicine Trials Network for HIV/AIDS Interventions.

^bFAS-III: family affluence scale-III.

^cMSPSS: multidimensional scale of perceived social support.

^dHPV: human papillomavirus.