TY - JOUR AU - K. K. Loo AU - S. J. Yang AU - J. C. Cheng A1 - AB - OBJECTIVE: To determine the accuracy of the Parent's Observation of Social Interactions (POSI) when deployed for universal autism screening within a large healthcare network. STUDY DESIGN: Retrospective analysis of electronic health record data from children screened for autism spectrum disorder (ASD) using POSI at the 18- and 24- month pediatric well-child care (WCC) visits across Southern California Permanente Medical Group facilities throughout the 2022 calendar year. Data on ASD diagnoses placed in the electronic health record problem list were analyzed 1 year later (until the end of 2023) to calculate sensitivity, specificity, and positive/negative likelihood ratio (LR+ and LR-) values. RESULTS: At the 18-month WCC, 8014 of 30 375 children (26.4%) had elevated POSI scores of ≥3 (positive screen), and the sensitivity and specificity were 77.9% and 76.1%, respectively. At the 24-month WCC, 5988 children of 27 975 (21.4%) had positive POSI screens, and the sensitivity and specificity were 76.5% and 81.4%, respectively. The LR+ was 3.3 at 18 months and 4.2 at 24 months. The LR- was 0.29 at both the 18- and 24-month time points. CONCLUSIONS: The POSI screen for ASD had adequate sensitivity and specificity (both >76%) when systematically deployed in a primary care setting at 18- and 24-month WCC visits. Children diagnosed with ASD were 3.3 and 4.2 times more likely to have screened positive at 18 and 24 months, compared with children who were not diagnosed with ASD. Conversely, children not diagnosed with ASD were 3.4 times more likely to have screened negative than children with ASD at 18 and 24 months. AD - Department of Pediatrics, Kaiser Permanente Los Angeles Medical Center, Los Angeles, CA. Electronic address: kek.k.loo@kp.org.; Department of Research & Evaluation, Southern California Permanente Medical Group, Pasadena, CA.; Department of Pediatrics, Kaiser Permanente Los Angeles Medical Center, Los Angeles, CA. AN - 39674539 BT - J Pediatr C5 - Measures DA - Mar DO - 10.1016/j.jpeds.2024.114434 DP - NLM ET - 20241212 JF - J Pediatr LA - eng N2 - OBJECTIVE: To determine the accuracy of the Parent's Observation of Social Interactions (POSI) when deployed for universal autism screening within a large healthcare network. STUDY DESIGN: Retrospective analysis of electronic health record data from children screened for autism spectrum disorder (ASD) using POSI at the 18- and 24- month pediatric well-child care (WCC) visits across Southern California Permanente Medical Group facilities throughout the 2022 calendar year. Data on ASD diagnoses placed in the electronic health record problem list were analyzed 1 year later (until the end of 2023) to calculate sensitivity, specificity, and positive/negative likelihood ratio (LR+ and LR-) values. RESULTS: At the 18-month WCC, 8014 of 30 375 children (26.4%) had elevated POSI scores of ≥3 (positive screen), and the sensitivity and specificity were 77.9% and 76.1%, respectively. At the 24-month WCC, 5988 children of 27 975 (21.4%) had positive POSI screens, and the sensitivity and specificity were 76.5% and 81.4%, respectively. The LR+ was 3.3 at 18 months and 4.2 at 24 months. The LR- was 0.29 at both the 18- and 24-month time points. CONCLUSIONS: The POSI screen for ASD had adequate sensitivity and specificity (both >76%) when systematically deployed in a primary care setting at 18- and 24-month WCC visits. Children diagnosed with ASD were 3.3 and 4.2 times more likely to have screened positive at 18 and 24 months, compared with children who were not diagnosed with ASD. Conversely, children not diagnosed with ASD were 3.4 times more likely to have screened negative than children with ASD at 18 and 24 months. PY - 2025 SN - 0022-3476 SP - 114434 ST - Autism Screening Using the Parent's Observation of Social Interactions in a Large Integrated Healthcare System T1 - Autism Screening Using the Parent's Observation of Social Interactions in a Large Integrated Healthcare System T2 - J Pediatr TI - Autism Screening Using the Parent's Observation of Social Interactions in a Large Integrated Healthcare System U1 - Measures U3 - 10.1016/j.jpeds.2024.114434 VL - 278 VO - 0022-3476 Y1 - 2025 ER -