Table 2.

Determinants of blood cadmium levels (log BCLs) in CPD patients ( n  = 301)

	Simple linear regression		Backward stepwise multiple regression analysis
Variables	Coefficient ± SE	P	Beta Coefficient ± SE	P
Age (years)	0.009 ± 0.002	<0.001	0.006 ± 0.002	0.001
Peritoneal dialysis duration (years)	0.017 ± 0.008	0.040
Diabetes mellitus (Yes = 1)	0.171 ± 0.077	0.028
Albumin (g/dL)	-0.142 ± 0.053	0.008	-0.167 ± 0.034	0.002
ALT (IU/L)	0.004 ± 0.002	0.030	0.003 ± 0.002	0.046
Creatinine (mg/dL)	-0.027 ± 0.008	0.001
Phosphate (mg/dL)	-0.052 ± 0.019	0.006

ALT, alanine aminotransferase; CPD, chronic peritoneal dialysis; iPTH, intact parathyroid hormone; Log BCL, logarithmic transformation of the blood cadmium level; SE, standard error.