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Associations Between Sociodemographic Predictors and Age of Referral for Autism Spectrum Disorder (ASD) Diagnosis Since the Beginning of the COVID-19 pandemic.

Journal of racial and ethnic health disparities2026

Mathur Mallika, Li Ruosha, McKay Sandra, Markham Christine, Ernest Deepali K, Sharma Shreela

What this study means for families

Researchers studied when children got referred for autism diagnosis during COVID-19. They found children were referred at an average age of 37 months (over 3 years), which is later than recommended. During the worst part of the pandemic, referrals happened even later. Surprisingly, race didn't affect referral timing, but community education levels and income did. This suggests the pandemic delayed autism diagnoses and that where families live affects when children get help.

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Research summary

This cross-sectional study examined factors associated with age of autism referral during COVID-19 (March 2020-May 2023) using electronic health records from 507 children. Mean referral age was 37.3 months, with 83.2% receiving Medicaid, 42.6% Latino/Hispanic, and 29.8% Black non-Hispanic. Children were referred later during the acute pandemic phase versus endemic phase (40.4 vs 35.4 months). Contrary to expectations, race and ethnicity were not significantly associated with referral age.

However, lower population educational attainment was associated with earlier referrals, while higher median income was linked to later referrals during the endemic phase. Findings suggest pandemic timing affected referral patterns, with complex socioeconomic influences on autism diagnostic access.

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Key findings

  • 1

    Mean age of autism referral was 37.3 months, later than screening recommendations

    Confidence: moderateRelevance: Indicates systematic delays in autism identification and referral processes
  • 2

    Children referred later during acute pandemic phase (40.4 months) versus endemic phase (35.4 months)

    Confidence: moderateRelevance: Demonstrates pandemic impact on healthcare access and timing of autism services
  • 3

    No significant associations between race/ethnicity and age of referral

    Confidence: limitedRelevance: Contradicts previous research showing racial disparities in autism diagnosis timing
  • 4

    Lower population educational attainment associated with earlier referrals

    Confidence: limitedRelevance: Suggests complex socioeconomic factors influence autism identification patterns

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Clinical implications

Findings highlight need for systematic approaches to ensure timely autism referrals, particularly in underserved populations. Healthcare systems should implement early screening protocols and address pandemic-related delays. Community-level factors warrant consideration in referral practices.

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Limitations

Cross-sectional design limits causal inference. Single healthcare system may not be generalizable. Study period encompasses varying pandemic phases. Limited discussion of potential confounding variables or methodological details in abstract.

Summary by AutismInsights from published abstract. This is not a substitute for reading the original paper.

Original abstract

Sociodemographic characteristics, such as race and ethnicity, are associated with delays in ASD diagnosis. However, limited literature has examined the characteristics associated with delayed diagnosis since the start of the COVID-19 pandemic. This study aimed to identify the individual and aggregate sociodemographic characteristics associated with the age at which a child receives a referral for a diagnosis (from March 2020 to May 2023) and evaluate the impacts of the pandemic on this association. Using cross-sectional data obtained from patients' electronic health records and the U.S.

Census Bureau, we examined associations using linear regressions (N = 507). A subgroup analysis was conducted comparing two pandemic-related time frame phases: acute (March 2020-December 2021) and endemic (January 2022-May 2023). The mean age of referral was 37.3 months; 83.2% were Medicaid recipients, 42.6% were Latino/Hispanic, and 29.8% were Black non-Hispanic. Children were referred for an evaluation at an older age during the acute phase compared to the endemic phase (40.4 vs. 35.4 months).

There were no significant associations between race and ethnicity and age of referral. Population educational attainment was negatively associated with the age of referral (p < 0.05). The subgroup analysis showed a positive association between median population income and age of referral during the endemic phase (p < 0.05). Referrals to receive a diagnosis occur later than the screening recommendations.

Future work should focus on developing health system-wide practices, particularly among health systems serving large proportions of underserved populations, targeting early referrals for an evaluation to receive an ASD diagnosis.

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Evidence Grade

Emerging

limited

Grade assigned by AutismInsights based on study type and published abstract.

Study Details

Journal
Journal of racial and ethnic health disparities
Year
2026
PMID
39994155
DOI
10.1007/s40615-025-02316-w

MeSH Terms

HumansCOVID-19MaleReferral and ConsultationChild, PreschoolFemaleCross-Sectional StudiesUnited StatesAutism Spectrum DisorderInfantChildAge FactorsSociodemographic FactorsEthnicityDelayed DiagnosisSARS-CoV-2Socioeconomic FactorsPandemics