Table 2.

Parameters after treatment over the break-in period

	APD group (n = 42)	P	APD–CAPD group (n = 28)	P	CAPD group (n = 26)	P
Toxins
Blood urea nitrogen (mmol/L)	14.41 ± 5.68	0.000	13.51 ± 4.03	0.000	16.40 ± 5.43	0.008
Creatinine (umol/L)	657.80 ± 193.71	0.000	627.30 ± 154.41	0.001	711.00 ± 258.94	0.136
Uric acid (umol/L)	370.60 ± 73.48	0.000	357.80 ± 107.32	0.014	404.50 ± 87.20	0.223
Electrolytes
Serum potassium (mmol/L)	3.80 ± 0.50	0.000	3.75 ± 0.51	0.000	4.17 ± 0.51	0.012
Serum calcium (mmol/L)	2.12 ± 0.25	0.069	2.17 ± 0.25	0.154	2.23 ± 0.31	0.132
Serum phosphorus (mmol/L)	1.43 ± 0.38	0.000	1.27 ± 0.27	0.000	1.68 ± 0.47	0.160
Serum sodium (mmol/L)	139.00 ± 3.75	0.094	141.20 ± 3.50	0.277	141.50 ± 3.34	0.589
CO2-CP (mmol/L)	24.51 ± 2.70	0.000	24.93 ± 3.75	0.001	24.48 ± 2.01	0.010
Nutritional indicators
Albumin (g/L)	29.81 ± 4.85	0.000	31.33 ± 5.32	0.083	32.32 ± 5.38	0.691
Pre-albumin (mg/L)	268.60 ± 87.23	0.072	299.60 ± 107.41	0.728	302.20 ± 83.05	0.556
Total protein (g/L)	58.30 ± 8.70	0.003	61.72 ± 8.83	0.117	60.19 ± 7.18	0.080
Others
FPG (mmol/L)	5.32 ± 0.87	0.302	5.46 ± 0.92	0.622	5.58 ± 1.27	0.983
Hemoglobin (g/L)	81.26 ± 15.34	0.856	83.00 ± 11.44	0.885	85.19 ± 13.86	0.336

APD, automatic peritoneal dialysis; CAPD, continuous ambulatory peritoneal dialysis; CO2-CP, carbon dioxide combining power; FPG, fasting plasma glucose. t test for comparing the value before PD and after break-in period, P < 0.05