To assess the implementation of screening, screening rates, and prevalence of adverse childhood experiences (ACEs) in a large integrated healthcare system.

Kaiser Permanente Southern California is a large integrated healthcare system with 15 medical centers/hospitals and 233 medical office buildings that serve approximately 1.5 million children. Screening for ACEs began in July 2018 at 1 medical center (Downey, Bellflower medical office) for 3- and 5-year-old well-child visits (yearly physical examination). It quickly expanded to 3 other medical centers (6 clinics in total) and now also includes the 10- and 13-year-old well-child visits.

Since July 2018 we have screened 3241 3-year-olds (53% of the target population), 2761 5-year-olds (53%), 545 10-year-olds (37%), and 509 13-year-olds (13%). Of the 3-year-olds who were screened, 15% had an ACEs score of 1 or higher. Of the 5-year-olds that were screened, 17.5% had an ACEs score of 1 or higher. Of the 10-year-olds, 30.5% had an ACEs score of 1 or higher and of the 13-year-olds, 33.8% had an ACEs score of 1 or higher.

Although we have encountered some challenges, particularly with follow-up for those screening positive for ACEs, screening was feasible. The data show an increasing trend of ACEs in 3- to 13-year-old children, highlighting the need for early education about ACEs to mitigate the effects of toxic stress.