Table 4:

Factors associated with pulse pressure (n = 446) in the whole cohort as well as pulse-wave velocity (PWV, n = 213), TACI (n = 206) and aortic augmentation index HR75 (AIX, n = 148) in blood donors and patients with CKD in a hierarchical regression model (dependent variables: pulse pressure, PWV, TACI or AIX, Model 1 includes age, sex, calcium, phosphate, magnesium and albumin, Model 2 further includes zinc), shown with regression coefficients (beta) and levels of significance (P-value; bolded if P < .05).

	Model 1		Model 2
	Beta	P	Beta	P
Pulse pressure (mmHg)
Age (years)	0.327	.000	0.330	.000
Sex (m1/f0)	0.003	.940	0.003	.941
Calcium (mmol)	0.046	.387	0.045	.396
Phosphate (mmol)	0.192	.000	0.198	.000
Magnesium (mmol)	–0.010	.823	–0.011	.817
Albumin (mg/dl)	–0.129	.016	–0.138	.017
Zinc (µg/l)			0.022	.683
PWV (m/s)
Age (years)	0.556	.000	0.553	.000
Sex (m1/f0)	0.199	.000	0.199	.000
Calcium (mmol)	0.098	.131	0.097	.133
Phosphate (mmol)	0.150	.018	0.146	.029
Magnesium (mmol)	–0.151	.008	–0.150	.009
Albumin (mg/dl)	–0.090	.177	–0.085	.220
Zinc (µg/l)			–0.015	.813
TACI (ml/m²/mmHg)
Age (years)	–0.597	.000	–0.609	.000
Sex (m1/f0)	–0.039	.479	–0.037	.498
Calcium (mmol)	–0.038	.555	–0.040	.541
Phosphate (mmol)	–0.201	.002	–0.216	.001
Magnesium (mmol)	0.022	.699	0.024	.675
Albumin (mg/dl)	0.045	.501	0.062	.378
Zinc (µg/l)			–0.055	.405
Aortic AIX HR75 (%)
Age (years)	0.217	.008	0.202	.014
Sex (m1/f0)	–0.283	.000	–0.286	.000
Calcium (mmol)	–0.085	.362	–0.082	.381
Phosphate (mmol)	0.066	.492	0.044	.654
Magnesium (mmol)	–0.041	.643	–0.034	.702
Albumin (mg/dl)	–0.010	.918	0.021	.832
Zinc (µg/l)			–0.105	.237