Descriptor	Inter-item reliability (pre- and post-test)	Measures	Construct
Youth Adherence to ART	Single items	Derived from Pediatric AIDS Clinical Trials Group (Mellins et al., 2006; Usitalo et al., 2010)	How often medications missed over past 6 months
Youth Mental Health	.42 to .54	Strengths and Difficulties Questionnaire (Goodman, 1997; Youth in Mind, 2012)	Emotional symptoms, conduct, peer relations. Hyperactivity/inattentiveness, prosocial behavior
Child Depression	.54	Child Depression Inventory (Kovacs, 1981)	Depression symptoms
Self-Concept	.70 to .58	Tennessee Self-Concept Scale-Short Form (Fitts & Warren, 1996)	Self-identity, self-satisfaction, self-esteem
Youth HIV Treatment Knowledge	.65 to .74	HIV Treatment Knowledge (Levy, Lampman, Handler, Flay, & Weeks, 1993)	HIV causality, transmission, treatment
Youth and Caregiver Communication and Comfort	.88 to .73	Family Environment Scale/Family Assessment Measure (FES/FAM) (Bell et al., 2008)	Comfort and communication around hard to talk about issues
HIV/AIDS Illness Stigma	.82 to .67	Stigma (Westbrook, Bauman, & Shinnar, 1992)	Perceived stigma, disclosure and self-esteem