Journal
JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS
Volume 38, Issue 8, Pages 1414-1425Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10803-007-0509-7
Keywords
Autism spectrum conditions; Q-CHAT; childhood screening
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Funding
- Medical Research Council [G0600977] Funding Source: researchfish
- MRC [G0600977] Funding Source: UKRI
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We report a major revision of the CHecklist for Autism in Toddlers (CHAT). This quantitative CHAT (Q-CHAT) contains 25 items, scored on a 5 point scale (0-4). The Q-CHAT was completed by parents of n = 779 unselected toddlers (mean age 21 months) and n = 160 toddlers and preschoolers (mean age 44 months) with an Autism Spectrum Condition (ASC). The ASC group (mean (SD) = 51.8 (14.3)) scored higher on the Q-CHAT than controls (26.7 (7.8)). Boys in the control group (27.5 (7.8)) scored higher than girls (25.8 (7.7)). The intraclass correlation for test-retest reliability was 0.82 (n = 330). The distribution in the control group was close to normal. Full examination of the clinical validity of the Q-CHAT and test properties is underway.
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