Kidney cadmium levels and associations with urinary calcium and bone mineral density: a cross-sectional study in Sweden

Table 3 Multiple linear regression analysis with U-Ca as the dependent variable

	24-h U-Ca (mmol/h)	24-h U-Ca (mmol/mmol creatinine)	ON U-Ca (mmol/h)	ON U-Ca (mmol/mmol creatinine)
R²	0.34	0.52	0.27	0.31
Intercept	-0.39	-2.1	-0.78	-2.1
Regression coefficients
Categorical K-Cd (high/low)	0.04*	0.12**	-0.002	0.01
Age	-0.001	0.003	0.0004	0.003
Sex	-0.09**	-0.09	-0.05*	-0.04
Weight	-0.0004	-0.006**	0.0005	-0.004*
Menopause	0.04	0.09	0.04	0.13*
S-Ca, ionized, mmol/l	0.57*	2.4**	0.69**	2.05**
24-h urinary flow rate, ml/h	0.0007	0.001
ON urinary flow rate, ml/h			0.0007*	0.0009
S-25(OH)D3, ng/ml	-0.003*	-0.006**	0.0002	0.0003

ON = overnight sample. Menopause assumed for women aged >51 years (coded 1 if present, otherwise 0). N = 76 observations used. *p < 0.05, **p < 0.01.

ISSN: 1476-069X