e-ISSN: Pending
Negative / Null Result ReportMedicine

Association between exposure to pyrethroids and chlorpyrifos at age 5 years and IQ at age 7 years among children from the Odense Child Cohort, a prospective birth cohort study.

Normann SS; Andersen HR; Lund LC; Beck IH; Nielsen F; Bilenberg N; Nielsen C; Halldórsson ÞI · 2025 · Environmental research

WASTE classifies this as Negative / Null Result Report · AI classification, approximate

The study found no significant effect — useful as a negative control or null benchmark for your own design.

Abstract (excerpt)

Background Over the past decade, the use of organophosphate insecticides including chlorpyrifos has faced increasing restrictions due to health concerns, leading to a rise in use of pyrethroids. Concerns about neurodevelopmental insults…

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Metadata source: Europe PMC · DOI 10.1016/j.envres.2025.120853