Tracking adolescent outcomes after inpatient hospitalization is important in informing clinical care for this age group, as inpatient care is one of the most expensive treatment modalities. This study examined 4 incentive strategies used to maintain adolescent participation in follow-up research (at 6, 12, and 18 mo) after their discharge from the hospital (N=267). A generalized estimation equation approach was taken to investigate whether different incentive strategies predicted adolescent completion of the follow-up assessments at each time point. Findings demonstrate that implementation of social worker contact significantly differed from other incentive strategies in increasing adolescent completion of follow-up assessments (Z=2.51, P=0.012) over the 3 time points, even when controlling for age and sex. Although these findings ultimately need to be confirmed through a randomized controlled study of incentive strategies, they provide preliminary support for the notion that relational incentives, such as maintaining contact with a member of the clinical team at the hospital, may be particularly important in promoting adolescent participation in outcomes research.