MIREC Cohort: Prenatal Chemical Exposures and Child IQ Associations

The Maternal-Infant Research on Environmental Chemicals (MIREC) study is a Canadian pregnancy and birth cohort. It synthesizes findings from eight studies examining sex-specific associations between prenatal exposure to over 25 chemical biomarkers and child IQ at age 3-4 years. The dataset was last updated on 2026-05-15.

Use Cases

• Analyze sex-specific susceptibility to neurotoxins based on the reported trend of male susceptibility.
• Investigate associations between child IQ scores and specific chemical classes like PFAS, phthalates, and pesticides mentioned in the results.
• Study the relationship between prenatal biomarker concentrations in maternal/cord blood and developmental outcomes.
• Examine the Performance IQ subdomain's sensitivity to environmental exposures as highlighted in the findings.

Strengths

• Focuses on a comprehensively phenotyped Canadian pregnancy and birth cohort.
• Analyzes over 25 chemical biomarkers measured in maternal blood/urine and cord blood.
• Child IQ was assessed using the standardized Wechsler Preschool and Primary Scale of Intelligence, Third Edition.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset is a 275.1 KB DOCX file, suggesting limited scope and likely containing summary tables rather than raw data.

Provenance

Source

Maternal-Infant Research on Environmental Chemicals (MIREC) study.

Collection Method

Synthesis of findings from eight cohort studies.

Time Range

Child IQ assessed at age 3-4 years.

Freshness

Last updated 2026-05-15 05:42:45; freshness should be verified.

Geography

Canada.