Screening for autism in preterm children: diagnostic utility of the Social Communication Questionnaire

Johnson, Samantha; Hollis, Chris; Hennessy, Enid; Kochhar, Puja; Wolke, Dieter; Marlow, Neil
January 2011
Archives of Disease in Childhood -- Fetal & Neonatal Edition;Jan2011, Vol. 96 Issue 1, p73
Academic Journal
Objective Preterm survivors are at high risk for autism spectrum disorders (ASD). The diagnostic utility of the Social Communication Questionnaire (SCQ) in screening for ASD was assessed in extremely preterm children at 11 years of age. Design All babies born at <26 weeks gestation in UK and Ireland from March through December 1995 were recruited to the EPICure Study. Of 307 survivors, 219 (71%) were assessed at 11 years. Parents of 173 children completed the SCQ to screen for autistic features and the Development and Well Being Assessment (DAWBA) psychiatric interview. A consensus diagnosis of ASD was assigned by two child psychiatrists following review of the DAWBA parental interview and corresponding DAWBA teacher questionnaire. Setting Community-based follow-up. Results Using the established SCQ cut-off (scores ≥15), 28 (16%) extremely preterm children screened positive for ASD. Eleven (6%) were assigned a diagnosis of ASD. Using this cut-off, the SCQ had 82% sensitivity and 88% specificity for identifying ASD in this population. Using a receiver operating characteristic curve, SCQ scores ≥14 had optimal diagnostic utility (area under curve: 0.94; sensitivity: 91%; specificity: 86%). Positive predictive value was relatively low (31%) resulting in numerous over-referrals. However, children with false positive screens had significantly worse neuro-developmental, cognitive and behavioural outcomes than those with true negative screens. Conclusion The SCQ has good diagnostic utility for identifying ASD in extremely preterm children and is a useful screening tool in this population. Children with false positive screens represent a high-risk group in whom further diagnostic assessment would be beneficial.


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