Participants will complete an electronic socio-demographic questionnaire followed by a set of hypothetical clinical decision-making scenarios to assess preferred decision-making roles and involvement of healthcare providers and family/friends. Responses will inform understanding of facilitators and barriers to shared decision-making.

Participants complete a socio-demographic questionnaire and decision-making preferences scale, including hypothetical clinical scenarios, to identify their preferred decision-making role (active, collaborative, or passive) and the influence of providers or family. Delivered electronically via secure link; reminders sent as needed.

Proportion of participants who select an active, collaborative, or passive role in hypothetical clinical decision-making scenarios. Each role will be counted and compared across participant subgroups.

This outcome assesses the association between sociodemographic characteristics (e.g., age, race/ethnicity, gender, education level, and employment status) and adolescents' and young adults' preferred treatment decision-making role. Role preference (active, collaborative, or passive) is assessed using the modified Control Preferences Scale. Sociodemographic variables are self-reported via electronic questionnaire. The unit of measure is the chi-square test statistic or ANOVA output, depending on the variable type.