Young Adults with a History of Residential Youth Care: A Cohort Profile of a Hard-to-Reach Population.

Adults with a history of living in residential youth care (RYC) face elevated risks across various life domains. In this cohort profile paper, we outline the design of a comprehensive follow-up study-the VINGO study-targeting young adults (22-30 years) with a history of living in RYC (T2). We describe the recruitment strategy and present sample characteristics. Data were collected in the baseline study (T1) from 2011 to 2014. At T1, the 400 adolescent participants showed a high prevalence of mental disorders, maltreatment experiences, substance use, and self-reported suicide attempts. Data collection at T2 10 years later (2021-2023) included self-reported sociodemographic information, physical health, childhood maltreatment, dissociation, quality of life, social support, and self-esteem using standardized and validated instruments. A diagnostic psychiatric assessment and subjective evaluation of service utilization were conducted by telephone interviews. Additionally, a qualitative sub-study involved in-depth interviews of fourteen participants. We reached a 52% response rate at T2. Comparing participants (n = 157, 107 females) to non-participants (n = 243, 123 females) based on T1 data revealed that T2 participants had a higher prevalence of depression, anxiety, and conduct disorder and a lower prevalence of ADHD at T1. Furthermore, T2 participants reported more suicide attempts, experiences of maltreatment, and problematic substance use at T1. Our results show that we reached a burdened population, positioning the VINGO study as a unique opportunity to examine a vulnerable population of emerging adults.