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Table 6 Odds ratios (unadjusted and adjusted) between hair mercury concentration stratified on the base of the WHO "reference level" and neurocognitive tests stratified by the median of each test.

From: Low level methylmercury exposure affects neuropsychological function in adults

Test OR 95% CI OR* 95% CI
Fine Motor Speed 3.3 1.3 8.0 3.5 1.2 9.3
Digit Symbol 2.4 1.1 5.2 1.6 0.6 5.0
Logical Memory first story 2.6 1.1 6.0 2.3 1.0 5.8
Digit Span backward 2.6 1.1 5.6 2.3 1.1 6.0
Easy Learning 2.9 1.3 6.5 2.9 1.1 7.3
  1. *Adjusted by age, sex and educational level