Table 3.

Baseline characteristics by status for chronic kidney disease based on various kidney function estimators

Variables	CKD (MDRD)			CKD (CKD-CG)			CKD (CKD-EPI)
	No	Yes	P	No	Yes	p	No	Yes	p
n (%)	445 (89.0)	55 (11.0)		429 (85.8)	71 (14.2)		450 (90.0)	50 (10.0)
Sex (women)	208 (46.7)	25 (45.5)	0.887	201 (46.9)	32 (46.6)	0.799	210 (46.7)	23 (46.0)	>0.999
Mean age, years (SD)	44.1 (12.7)	54.7 (13.4)	<0.001	43.4 (12.1)	56.9 (13.6)	<0.001	44.1 (12.4)	56.1 (14.2)	<0.001
History of hypertension (%)	44 (9.9)	17 (30.9)	<0.001	42 (9.8)	19 (26.8)	<0.001	44 (9.8)	17 (34.0)	<0.001
History of diabetes (%)	8 (1.8)	6 (10.9)	0.002	8 (1.9)	6 (8.5)	0.008	8 (1.8)	6 (12.0)	0.001
History of gout (%)	4 (0.9)	2 (3.6)	0.134	4 (0.9)	2 (2.8)	0.204	4 (0.9)	2 (4.0)	0.113
Tobacco use (%)	32 (7.2)	3 (5.5)	0.785	32 (7.5)	3 (4.2)	0.453	33 (7.3)	2 (4.0)	0.561
Alcohol use (%)	245 (55.1)	27 (49.1)	0.473	238 (55.5)	34 (47.9)	0.249	248 (55.1)	24 (48.0)	0.371
Longstanding use of herbal medicine (%)	256 (57.5)	33 (60.0)	0.774	249 (58.0)	40 (56.3)	0.797	260 (57.8)	29 (58.0)	>0.999
Longstanding use of street medicine (%)	130 (29.2)	18 (32.7)	0.639	124 (28.9)	24 (33.8)	0.403	129 (28.7)	19 (38.0)	0.192
Mean SBP, mmHg (SD)	132 (24)	138 (29)	0.081	131 (23)	140 (30)	0.008	132 (24)	139 (30)	0.052
Mean DBP, mmHg (SD)	81 (14)	85 (19)	0.076	81 (14)	94 (18)	0.138	81 (14)	84 (19)	0.127
Any hypertension (%)	161 (36.2)	32 (58.2)	0.002	154 (35.9)	39 (54.9)	0.004	163 (36.2)	30 (60.0)	0.002
Mean BMI, kg/m2 (SD)	27.0 (12.6)	28.2 (6.5)	0.107	27.4 (5.3)	25.2 (5.1)	0.002	27.0 (5.2)	27.9 (6.5)	0.268
BMI > =25 (%)	267 (60.0)	35 (63.6)	0.663	269 (62.7)	33 (46.5)	0.012	272 (60.4)	30 (60.0)	>0.999
Pulse (SD)	76 (13)	78 (14)	0.344	76 (13)	77 (13)	0.651	76 (13)	79 (14)	0.236

BMI body mass index, CG Cockroft-Gault, CKD chronic kidney disease, CKD-EPI chronic kidney disease epidemiology collaboration, DBP diastolic blood pressure, MDRD Modification of Diet in Renal Disease, SBP systolic blood pressure, SD standard deviation