OBJECTIVE: The objective of this study was to explore the potential of the Infant/Toddler Sensory Profile (ITSP) as a screening tool for autism spectrum disorders (ASD) in prematurely born children. METHODS: Parents of 157 children with birth weights <1,500 g (aged 2 years, corrected for prematurity; 88 boys, 69 girls) completed a screening battery that included the ITSP, Modified Checklist for Autism in Toddlers (M-CHAT), and the Communication and Symbolic Behavior Scales Developmental Profile Infant-Toddler Checklist (CSBS-DP-ITC). Children with known disabilities were excluded. All the children who were screened positive on any of the screening tools subsequently underwent clinical examination including the Autism Diagnostic Observation Schedule. RESULTS: We used classification trees to answer the question whether ITSP (or some of its subscales) could be combined with the M-CHAT and/or the CSBS-DP-ITC or its subscales into an effective ASD screening tool. Using the CSBS-DP-ITC, overall score, and the Sensation Seeking subscale of the ITSP, we obtained a screening tool that was able to identify all of the ASD children in our sample (confirmed by cross-validation). The proposed screening tool is scored as follows: 1) if the overall CSBS-DP-ITC value is <45.5, then the screening is positive; 2) if the overall CSBS-DP-ITC value is ≥45.5 and the z-score of the Sensation Seeking subscale of ITSP is ≥1.54, then the screening is positive; 3) otherwise, the screening is negative. CONCLUSION: The use of CSBS-DP-ITC in combination with the Sensation Seeking subscale of the ITSP improved the accuracy of autism screening in preterm children.

Department of Applied Economics Faculty of Arts Palacky University Olomouc

Department of Child Psychiatry Charles University 2nd Faculty of Medicine and University Hospital Motol Prague

Department of Pediatrics and Adolescent Medicine Charles University 1st Faculty of Medicine and General University Hospital Prague

Department of Pediatrics Charles University 2nd Faculty of Medicine and University Hospital Motol Prague

Department of Pediatrics Charles University Faculty of Medicine and University Hospital Hradec Kralove

Institute of Psychology Academy of Sciences Brno Czech Republic

Laboratory of Applied Mathematics Lappeenranta University of Technology Lappeenranta Finland

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