Observational studyJornal de pediatria
Cognitive outcome of 458 children over 25 years of neonatal screening for congenital hypothyroidism.
Observational study in Jornal de pediatria. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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Who cites it
3 citing papers in PubMed, 5 citations in OpenAlex.
- Growth and Neurodevelopmental Outcomes of Children With Congenital Hypothyroidism Identified Through Dried Blood Spot Newborn Screening at a Tertiary Care Hospital in Pakistan.Endocrinology, diabetes & metabolism · 2026Article
- Bridging Gaps in Newborn Screening: A Comparative Study of Point-of-Care Testing Versus Traditional Reference Laboratory Method for Congenital Hypothyroidism.Journal of the ASEAN Federation of Endocrine Societies · 2026Article
- Impact of Lowering TSH Cut-Off on Neonatal Screening for Congenital Hypothyroidism in Minas Gerais, Brazil.International journal of neonatal screening · 2024Article
Corrections and comments
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Authors and funding
9 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo describe the neurocognitive profile of 458 children with congenital hypothyroidism detected by neonatal screening, followed under the same treatment protocol over 25 years. To correlate estimated full-scale IQ (FSIQ) scores with age at the start of treatment, disease severity, and maternal education.
methodsObservational, analytical, retrospective, and longitudinal cohort study, that evaluated children detected between 1991 and 2014, who underwent at least one psychometric assessment (WPPSI- R and/or WISC-III). Estimated FSIQ scores are described and correlated with prognosis determinants.
resultsMedian T4 at diagnosis was 2.8 μg/dL (0.0-16.5), the median age at the start of treatment was 18.5 days (3-309). Maternal education (n = 445): 2.7% of illiteracy, 59.8% with basic education. Estimated FSIQ scores were 88.0 (±11.8) in WPPSI-R (age 5.6 ± 0.5 years) and 84.1 (±13.0) in WISC-III (age 9.1 ± 1.4 years). The intellectual deficit was identified in 11.6%. Correlation between age at the start of treatment and estimated FSIQ was found only in the WPPSI-R test (p = 0.02). Initial T4 and maternal education significantly correlated with estimated FSIQ scores in both tests, with the latter being the most important determining factor.
conclusionsIn this large cohort of mainly low socioeconomic status children, most children achieved normal cognitive levels; however, a significant percentage presented with below-average estimated FSIQ scores and intellectual deficits. Maternal education was the main determining factor in cognitive level followed by hypothyroidism severity.
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