BioMed Research International / 2012 / Article / Tab 3

Research Article

Methyl Mercury Exposure at Niigata, Japan: Results of Neurological Examinations of 103 Adults

Table 3

Adjusted PORs* and their 95% C.I.s between mercury content and neurological signs.

value for trend

Dis.dom.bil. S.D. (%)23 (95.8)23 (95.8)20 (95.2)32 (94.1)
 PORs and 95% CIs11.0 (0.1, 18.1)0.6 (0, 11.7)0.7 (0, 10.4)0.74
Perioral S.D. (%)10 (41.7)12 (50)16 (76.2)21 (61.8)
 PORs and 95% CIs11.4 (0.5, 4.5)4.3 (1.2, 16)2.7 (0.9, 8.3)0.04
Whole body S.D. (%)0 (0)2 (8.3)0 (0)1 (3)
 PORs and 95% CIs1NENENE0.98
Ataxia (%)17 (70.8)17 (70.8)18 (85.7)27 (79.4)
 PORs and 95% CIs11.0 (0.3, 3.8)2.2 (0.5, 10.5)2.3 (0.6, 8.9)0.14
Visual constriction (%)11 (45.8)11 (45.8)7 (41.2)13 (43.3)
 PORs and 95% CIs11.0 (0.3, 3.5)0.5 (0.1, 2)1.1 (0.3, 3.6)0.89
Hearing impairment (%)16 (72.7)19 (86.4)15 (78.9)20 (64.5)
 PORs and 95% CIs12.6 (0.5, 13.2)1.1 (0.2, 5.1)0.6 (0.1, 2.2)0.25
Speech disturbance (%)3 (13)4 (16.7)4 (23.5)8 (25)
 PORs and 95% CIs11.2 (0.2, 6.9)1.4 (0.2, 8.4)1.8 (0.4, 8.8)0.45
Disequilibrium (%)20 (83.3)21 (87.5)16 (80)31 (91.2)
 PORs and 95% CIs11.4 (0.3, 7.1)0.7 (0.1, 3.4)1.9 (0.3, 10)0.66

*Prevalence odds ratios were estimated using 0–20 ppm as a reference and were adjusted for age and sex.
Abbreviations: C.I.: confidence interval; Dis.dom.bil.: distal dominant bilateral; NE: not estimatable; POR: prevalence odds ratio.

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