Longitudinal analysis of health outcomes after exposure to toxics, Willits California, 1991-2012: application of the cohort-period (cross-sequential) design.

Environ Health · 2014 · PMC4223849 · PMID 25342458

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did not reach statistical significanceno p-value reported

However, another reason findings did not reach statistical significance may be that the researchers examined age effects instead of cohort effects.

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