Sex differences in early autism screening using the Modified Checklist for Autism in Toddlers, Revised, with Follow-Up (M-CHAT-R/F).

This research looked at whether a common autism screening test (M-CHAT-R/F) works equally well for boys and girls. The study found that girls were less likely to be flagged as needing further testing and were less likely to be diagnosed with autism, even when showing signs. However, when girls did screen positive, the tool was still accurate at identifying autism. This suggests girls might be missing out on early support because they're not being identified as early as boys.

This study examined sex differences in autism screening using the M-CHAT-R/F tool in toddlers. Researchers found significant disparities between males and females in screening outcomes. Females were less likely to screen positive for autism and subsequently less likely to be invited for diagnostic evaluations compared to males. Among those identified as high-likelihood for autism, females were less likely to receive an actual autism diagnosis, raising concerns about screening accuracy for this population.

Despite these disparities, the M-CHAT-R/F demonstrated ability to accurately identify autism in both sexes when positive screens were followed through. The findings highlight potential gender bias in early autism detection that could impact access to early intervention services.

Clinicians should be aware of potential sex differences in M-CHAT-R/F screening outcomes and consider additional assessment strategies for females who may present differently. Training on recognizing autism presentations in females may be needed. Screening protocols may require modification to improve sensitivity for identifying at-risk females.

Study type and sample size are not reported, limiting assessment of methodological rigor. The abstract does not provide details about participant characteristics, study design, or statistical analyses. Lack of information about follow-up procedures and diagnostic criteria used limits interpretation of findings.

This study examined a widely used autism screening tool, the Modified Checklist for Autism in Toddlers, Revised, with Follow-Up to identify differences in screening for autism between toddler males and females. Examining sex differences in screening for autism in toddlerhood is important as it determines who will be referred for evaluations and receive diagnoses, which is critical for access to autism-specific early intervention. This study found that females were less likely to screen positive and be invited for evaluations compared with males. Females at high likelihood for autism were less likely to be diagnosed with autism, which decreases confidence in the screener's results.

Importantly, the Modified Checklist for Autism in Toddlers, Revised, with Follow-Up accurately identified both males and females with autism. Future research should examine ways to improve accuracy in screening results for females.