Dietary tin intake and association with canned food consumption in Japanese preschool children

Table 5 Possible correlation of Sn in urine with dietary Sn intake

X ^c	Y ^c	Intercept (α)^c	Slope (β)^c	Correlation coefficient^d
X ^c	Y ^c	Intercept (α)^c	Slope (β)^c	Pearson’s	Spearman’s
Sn-D^a	Sn-U ^b_ob	5.948	0.001	0.032	0.159
	Sn-U ^b_cr	6.672	<0.001	<0.001	0.231
	Sn-U ^b_sg	4.371	<0.001	<0.001	0.241
Log Sn-D	Log Sn-U_ob	0.342	0.079	0.148
	Log Sn-U_cr	0.520	0.059	0.110
	Log Sn-U_sg	0.217	0.061	0.114

^aSn-D is dietary intake of Sn in μg/day
^bSn-U_ob (in μg/l), Sn-U_cr (in μg/g creatinine) and Sn-U_sg (in μg/l) are Sn in urine as observed, after correction for creatinine concentration [20], and after correction for a specific gravity of urine (taking 1.016 as a standard) [21], respectively
^cα and β are the intercept and the slope in a regression equation Y = α + βX, where X is Sn-D or log Sn-D, and Y is Sn-U_ob, Sn-U_cr, Sn-U_sg, log Sn-U_ob, log Sn-U_cr or log Sn-U_sg, respectively
^dAll correlation coefficients are statistically insignificant (p > 0.10)

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