Early head injury and attention deficit hyperactivity disorder: retrospective cohort study.

BMJ · 2008 · PMC2590885 · PMID 18988644

Europe PMC DOI

hedged sentence

0.0700

closest p · 1.4× alpha

0.0700

boldest claim

The sentences

did not reach statistical significanceP=0.07so close (0.05 < p ≤ 0.1)

Children with head injury before age 2 were diagnosed as having ADHD at a slightly younger median age (6.2 (interquartile range 4.0-8.0) years) than children with burn injury (6.8 (4.8-9.0) years) or the comparison group (6.9 (4.6-8.8) years); however, this difference did not reach statistical significance (P=0.07).

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