Table 4.

Comparison of serum Ln(TMAO) and other parameters between the high AAC score group and the low AAC score group.

Characteristics	AAC score < 5.5 (n = 67)	AAC score ≥ 5.5 (n = 57)	p Value
Age (years)	53.3 ± 14.2	66.0 ± 11.3	<0.001
Gender, male, n (%)	44 (65.7)	35 (61.4)	0.622
Dialysis vintage (months)	53.9 (22.4, 74.3)	75.2 (50.7, 142.1)	<0.001
Diabetes mellitus, n (%)	19 (28.4)	27 (47.4)	0.029
Hemoglobin (g/L)	108.6 ± 9.9	109.3 ± 11.8	0.722
Serum creatinine (µmol/L)	1044.9 ± 311.8	897.5 ± 193.9	0.002
Kt/V urea (per week)	1.28 ± 0.25	1.34 ± 0.17	0.125
Serum albumin (g/L)	41.1 ± 3.3	40.5 ± 2.9	0.351
Serum corrected calcium (mmol/L)	2.26 ± 0.18	2.28 ± 0.21	0.655
Serum phosphate (mmol/L)	1.80 ± 0.52	1.77 ± 0.48	0.776
Serum usCRP (mg/L)	2.07 (0.58, 6.56)	3.39 (1.37, 8.12)	0.076
Plasma iPTH (pg/mL)	229.1(112.5, 443.5)	368.0(212.2, 600.1)	0.005
Serum CO2CP (mmol/L)	19.7 ± 3.0	19.6 ± 2.2	0.844
Serum LDL-C (mmol/L)	2.02 ± 0.63	1.96 ± 0.67	0.596
Serum HDL-C (mmol/L)	1.00 ± 0.34	0.96 ± 0.35	0.530
Serum triglycerides (mmol/L)	1.64 (0.92, 2.50)	1.98 (1.18, 2.89)	0.123
Serum Ln(TMAO)	1.67 ± 0.54	2.09 ± 0.55	<0.001
AAC (score)	2 (0, 3)	9 (6.5, 13)	<0.001

Ln(TMAO): the natural logarithm of trimethylamine-N-oxide; AAC: abdominal aortic calcification; Kt/V urea: fractional urea clearance; usCRP: ultrasensitive C-reactive protein; iPTH: intact parathyroid hormone; CO2CP: carbon dioxide combining power; LDL-C: low-density lipoprotein cholesterol; HDL-C: high-density lipoprotein cholesterol.