Table 6. General linear models for Z-score in calcaneal bone mineral density by groups.

Variables	Exposed group				Control group
	ß	SE (ß)	T	P	ß	SE (ß)	T	P
Sex (1: Male, 2: Female)	0.000	0.105	0.000	1.000	0.068	0.155	0.439	0.661
Smoking status (1: No, 2: Yes)	-0.001	0.007	-0.221	0.825	-0.014	0.015	-0.958	0.338
Drinking status (1: No, 2: Yes)	0.045	0.076	0.593	0.553	-0.209	0.138	-1.510	0.132
Urinary Cd, µg/g creatinine	-0.007	0.022	-0.302	0.763	-0.090	0.047	-1.920	0.056