Table 1 Results of partial correlation analyses performed using psychological variables and hair mercury level after correcting for confounding variables.

Dependent variables			Hg level
	N	Partial correlation coefficient	p (uncorrected)	p (FDR^a)
Raven’s Advance Progressive Matrices	920	−0.039(−0.103~0.025)	0.236	0.118
Total intelligence score of TBIT^b	843	−0.080(−0.145~−0.014)	0.018	0.034*
Perception score of TBIT	843	−0.075(−0.143~−0.008)	0.028	0.034*
Spatial relation factor of TBIT	849	−0.051(−0.116~0.014)	0.122	0.087
Reasoning factor of TBIT	849	−0.063(−0.127~0.001)	0.053	0.053
Simple arithmetic	661	−0.052(−0.127~0.023)	0.173	0.104
Complex arithmetic	661	0.003(−0.073~0.079)	0.942	0.377
Word-Color task	920	−0.079(−0.143~−0.014)	0.017	0.034*
Color-Word task	920	−0.074(−0.138~−0.009)	0.026	0.034*
Reverse Stroop task	918	−0.014(−0.079~0.050)	0.665	0.285
Stroop task	918	−0.061(−0.125~0.004)	0.065	0.056
Reading comprehension	837	−0.052(−0.120~0.016)	0.131	0.087
S-A creativity test	920	0.041(−0.023~0.105)	0.211	0.115
Digit span	915	−0.037(−0.101~0.027)	0.260	0.120
Beck depression Inventory	917	−0.087(−0.152~−0.023)	0.008	0.034*

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