TY - JOUR AU - N. A. Stadnick AU - K. Martinez AU - F. Navarro AU - P. Gomez-Patino AU - K. Holmquist AU - S. Negriff AU - S. Roesch AU - I. Bouchard AU - S. Walpole AU - R. Espinosa AU - S. Broder-Fingert AU - M. Barnett AU - L. Brookman-Frazee A1 - AB - ATTAIN NAV (Access to Tailored Autism Integrated Care through Family Navigation) was delivered by family navigators to promote access to and engagement with mental health services for school-age autistic youth. This study used a mixed method, stepped wedge design to test the effects of family navigation on service and clinical outcomes while gathering information on implementation. Primary care providers from six clinics in California and 56 caregiver-child dyads enrolled in and completed the study. Clinics were randomized to either a technology-enhanced or standard family navigation condition. Caregivers completed assessments at baseline and post about child, family and services outcomes, and a subset participated in a post qualitative interview. Quantitative findings demonstrated improvements in child challenging behavior and parent activation across conditions although these improvements were more pronounced for families in the standard FN condition. At post-intervention, families in the standard FN condition reported higher levels of navigation satisfaction, a shorter time to attend their first mental health appointment, and higher engagement with their navigator. Qualitative findings complemented and expanded the quantitative survey findings. The ATTAIN NAV model of family navigation for autistic children with co-occurring mental health needs demonstrates promising implementation, service, and clinical benefits. Clinical Trials Registration. NCT05344378. AD - Department of Psychiatry, University of California San Diego, La Jolla, CA, USA. nstadnic@health.ucsd.edu.; Altman Clinical and Translational Research Institute Dissemination and Implementation Science Center, University of California San Diego, La Jolla, CA, USA. nstadnic@health.ucsd.edu.; Child and Adolescent Services Research Center, San Diego, CA, USA. nstadnic@health.ucsd.edu.; Child and Adolescent Services Research Center, San Diego, CA, USA.; San Diego State University/University of California San Diego Joint Doctoral Program in Clinical Psychology, San Diego, CA, USA.; Department of Psychiatry, University of California San Diego, La Jolla, CA, USA.; Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA, USA.; Department of Psychology, San Diego State University, San Diego, CA, USA.; Department of Psychology, California State Northridge, Northridge, CA, USA.; Kaiser Permanente Southern California, San Diego, CA, USA.; Department of Pediatrics, University of Massachusetts Chan Medical School, Worcester, MA, USA.; Department of Counseling, Clinical, and School Psychology, University of California Santa Barbara, Santa Barbara, CA, USA.; Altman Clinical and Translational Research Institute Dissemination and Implementation Science Center, University of California San Diego, La Jolla, CA, USA. AN - 40338511 BT - J Autism Dev Disord C5 - Healthcare Disparities; Education & Workforce DA - May 8 DO - 10.1007/s10803-025-06851-7 DP - NLM ET - 20250508 JF - J Autism Dev Disord LA - eng N2 - ATTAIN NAV (Access to Tailored Autism Integrated Care through Family Navigation) was delivered by family navigators to promote access to and engagement with mental health services for school-age autistic youth. This study used a mixed method, stepped wedge design to test the effects of family navigation on service and clinical outcomes while gathering information on implementation. Primary care providers from six clinics in California and 56 caregiver-child dyads enrolled in and completed the study. Clinics were randomized to either a technology-enhanced or standard family navigation condition. Caregivers completed assessments at baseline and post about child, family and services outcomes, and a subset participated in a post qualitative interview. Quantitative findings demonstrated improvements in child challenging behavior and parent activation across conditions although these improvements were more pronounced for families in the standard FN condition. At post-intervention, families in the standard FN condition reported higher levels of navigation satisfaction, a shorter time to attend their first mental health appointment, and higher engagement with their navigator. Qualitative findings complemented and expanded the quantitative survey findings. The ATTAIN NAV model of family navigation for autistic children with co-occurring mental health needs demonstrates promising implementation, service, and clinical benefits. Clinical Trials Registration. NCT05344378. PY - 2025 SN - 0162-3257 ST - Mixed Methods Findings from a Stepped Wedge Hybrid Implementation Trial of ATTAIN NAV: A Mental Health Family Navigation Intervention for Autistic Youth T1 - Mixed Methods Findings from a Stepped Wedge Hybrid Implementation Trial of ATTAIN NAV: A Mental Health Family Navigation Intervention for Autistic Youth T2 - J Autism Dev Disord TI - Mixed Methods Findings from a Stepped Wedge Hybrid Implementation Trial of ATTAIN NAV: A Mental Health Family Navigation Intervention for Autistic Youth U1 - Healthcare Disparities; Education & Workforce U3 - 10.1007/s10803-025-06851-7 VO - 0162-3257 Y1 - 2025 ER -