. 2019 Dec 5;22(1):8–16. doi: 10.1177/1751143719892792

Table 1.

Characteristics of patients.

	DEFERRED RRT			EARLY RRT
Factor	N	%		N	%	p	stan diff
Diuretic prior day^a	35	21		36	21	0.999	1.5
Diuretic today^a	20	12		19	11	0.999	1.9
Vasopressor prior day^a	47	28		50	30	0.810	3.9
Vasopressor today^a	111	66		118	70	0.485	8.9
Female	55	33		73	43	0.057	22.1
Diagnosis						<0.001
ARDS	11	7		29	17
Transplants	15	9		18	11
Sepsis	38	22		31	18
Other	105	62		91	54
Factor	N	median	IQ	N	median	IQ	p	stan diff
Age (y)	153	61	52, 70	153	57	46, 64	0.004	29.6
Prior day’s values
Urine (mL)^a	141	775	290, 1801	141	560	215, 1865	0.551	9.0
Fluid balance (mL)	136	287	−941, 2188	139	969	−308, 2993	0.085	17.8
Creatinine (µmol/L)^a,b	169	221	110, 327	169	274	164, 385	0.005	9.3
BUN (mmol/L)^a,b	169	18	12, 24	169	18	12, 25	0.599	9.0
Potassium (mmol/L)^a	169	4.3	4.0, 4.9	169	4.4	4.0, 5.0	0.390	3.1
Bicarbonate (mmol/L)^a	169	22	19, 25	169	22	19, 25	0.875	0.8
Current day’s values
Creatinine (µmol/L)^a,b	169	230	124, 352	169	256	175, 354	0.066	3.2
BUN (mmol/L) ^a,b	169	18	13, 28	169	16	11, 24	0.351	6.0
Potassium (mmol/L)^a	169	4.4	4.0, 4.9	169	4.5	4.0, 5.0	0.717	0.5
Bicarbonate (mmol/L)^a	169	22	18, 25	169	22	19, 25	0.407	5.1
Fluid input (mL)	169	1912	1260, 3509	169	2656	1747, 4457	<0.001	18.4
Fluid output (mL)	169	1135	550, 2248	169	1814	710, 3162	0.004	23.7
Fluid balance (mL)	169	−48	−1940, 1325	169	−378	−2143, 1165	0.385	1.1
Urine today (mL)^a	169	950	352, 1951	169	1208	250, 2319	0.159	9.3
APACHE III Score	169	75	61, 88	169	90	75, 110	<0.001	68.0
Heart rate (/min)	169	91	79, 103	169	94	78, 107	0.378	11.6
Respirations (/min)	166	20	16, 24	161	22	16, 26	0.081	13.3
Temperature (℃)	166	36.9	36.6, 37.4	163	36.8	36.5, 37.2	0.006	30.2
Factor	N	median	IQ	N	median	IQ	p	stan diff
Systolic blood pressure (kPa)	169	15.2	13.3, 16.9	169	14.8	13.3, 16.9	0.628	1.1
Diastolic blood pressure (kPa)	169	7.2	6.5, 8.4	168	7.3	6.4, 8.9	0.855	2.2
Sodium (mmol/L)	169	139	136, 142	169	140	137, 144	0.086	9.0
Phosphorous (mmol/L)	163	1.61	1.16, 2.36	164	1.78	1.49, 2.39	0.029	13.5
Magnesium (mmol/L)	164	0.95	0.86, 1.07	164	0.99	0.91, 1.11	0.003	25.7
Glucose high (mmol/L)	166	7.71	6.55, 9.38	165	8.71	7.38, 10.6	<0.001	41.5
Glucose low (mmol/L)	166	5.94	5.16, 6.83	165	5.94	5.11, 6.94	0.914	1.9
Albumin (g/L)	95	27	24, 31	125	28	24, 32	0.782	3.0
Hemoglobin (g/L)	164	81	74, 93	163	78	70, 86	0.011	25.2
Platelets (10⁹/L)	164	141	85, 211	163	97	48, 177	0.001	19.6
Bilirubin (µmol/L)	94	23.9	10.3, 78.8	125	35.9	15.4, 101	0.049	26.4

Note: All current day values are based on values up to 12 noon of that day. If more than one lab value was determined, the highest creatinine, BUN, potassium, phosphorous, magnesium, bilirubin values are displayed; while the lowest bicarbonate, sodium, hemoglobin, and platelets values are displayed. ^aVariables in the propensity match.

To facilitate comparisons with other studies that used mean and standard deviation to describe creatinine and BUN, our mean and standard deviation for creatinine for the prior day were 277 ± 272 µmol/L in the DEFERRED group vs. 298 ± 182 in the EARLY group, p = 0.393; for BUN for the prior day, it was 19 ± 10 mmol/L vs. 20 ± 11, p = 0.411; for current day’s creatinine, it was 283 ± 236 vs. 290 ± 176, p = 0.765; and for current day’s BUN, 19 ± 10 vs. 20 ± 11, p = 0.411, respectively.

IQ: interquartile range; SD: standard deviation; stan diff: standardized difference.