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  • Title: Meta-analysis of the Modified Checklist for Autism in Toddlers, Revised/Follow-up for Screening.
    Author: Aishworiya R, Ma VK, Stewart S, Hagerman R, Feldman HM.
    Journal: Pediatrics; 2023 Jun 01; 151(6):. PubMed ID: 37203373.
    Abstract:
    CONTEXT: The Modified Checklist for Autism in Toddlers, Revised with Follow-up (M-CHAT-R/F) is used worldwide to screen for autism spectrum disorder (ASD). OBJECTIVE: To calculate psychometric properties of the M-CHAT-R/F for subsequent diagnosis of ASD. DATA SOURCES: Systematic searches of Medline, Embase, SCOPUS, and Trip Pro databases from January 2014 to November 2021. STUDY SELECTION: Studies were included if they (1) used the M-CHAT-R/F (2) applied standard scoring protocol, (3) used a diagnostic assessment for ASD, and (4) reported at least 1 psychometric property of the M-CHAT-R/F. DATA EXTRACTION: Two independent reviewers completed screening, full-text review, data extraction, and quality assessment, following Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. A random-effects model was used to derive pooled estimates and assess for between-study heterogeneity. RESULTS: Of 667 studies identified, 15 with 18 distinct samples from 10 countries (49 841 children) were used in the meta-analysis. Pooled positive predictive value (PPV), was 57.7% (95% confidence interval [CI] 48.6-66.8, τ2 = 0.031). PPV was higher among high-risk (75.6% [95% CI 66.0-85.2]) than low-risk samples (51.2% [95% CI 43.0-59.5]). Pooled negative predictive value was 72.5% (95% CI 62.5-82.4 τ2 = 0.031), sensitivity was 82.6% (95% CI 76.2-88.9) and specificity 45.7% (95% CI 25.0-66.4). LIMITATIONS: Negative predictive value, sensitivity, and specificity were calculated based on small sample sizes because of limited or no evaluation of screen-negative children. CONCLUSIONS: These results support use of the M-CHAT-R/F as a screening tool for ASD. Caregiver counseling regarding likelihood of an ASD diagnosis after positive screen should acknowledge the moderate PPV.
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