Table 1.

Demographic and health characteristics of men and women, aged ≥65 years, with and without chronic kidney disease at enrollment in the InCHIANTI Study

Characteristic1		Chronic Kidney Disease N = 153		No Chronic Kidney Disease N = 855		P
		N	% or Median (25th, 75th percentile)	N	% or Median (25th, 75th percentile)
Age, years	65-69	18	6.4	264	93.6	<0.0001
	70-74	29	10.7	242	89.3
	75-79	34	16.3	175	83.7
	80-84	33	29.0	81	71.0
	85-89	24	28.9	59	71.1
	≥90	15	30.6	34	69.4
Sex	Male	39	8.9	400	91.1	<0.0001
	Female	114	20.0	455	80.0
Education, years		152	5.0 (3.0, 5.0)	855	5.0 (4.0, 6.0)	<0.0001
Smoking status	Never	105	17.5	494	82.5	0.02
	Former	36	13.2	236	86.8
	Current	12	8.8	125	91.2
Body mass index (kg/m2)		138	27.2 (24.1, 29.8)	808	27.2 (27.8, 27.2)	0.83
Serum creatinine (mg/dL)		153	1.1 (1.0, 1.3)	855	0.9 (0.8, 1.0)	<0.0001
Serum creatinine (μmol/L)		153	97 (88, 115)	855	80 (71, 88)	<0.0001
Estimated glomerular filtration rate (mL/min/1.73 m2)		153	53.8 (48.5, 57.0)	855	76.3 (69.5, 87.0)	<0.0001
Plasma CML (ng/mL)		153	390 (323, 475)	855	344 (285, 413)	<0.0001
Mini-Mental Exam Score <24		62	40.5	229	26.8	0.0006
Hypertension		82	53.5	397	46.3	0.10
Angina		8	5.2	39	4.6	0.71
Peripheral artery disease		13	8.5	49	5.7	0.19
Congestive heart failure		19	12.4	35	4.1	<0.0001
Stroke		15	9.8	36	4.2	0.004
Diabetes mellitus		21	13.7	108	12.6	0.71
Depression		44	31.9	164	19.8	0.001
Cancer		20	13.1	45	5.3	0.0003

¹Median (25^th, 75^th percentile) for continuous variables or percent of participants with specific characteristic as noted. For variables with multiple categories, row percentages are shown.