Table 1.

Demographic and clinical characteristics of healthy subjects, Normocytic Normochromic anemic, Alzheimer's disease, CKD with cognitive dysfunction and CKD without cognitive dysfunction (n = 130).

Variable	Control (n = 30)	Normocytic normochromic (n = 30)	Alzheimer's disease (n = 10)	CKD with cognitive dysfunction (n = 30)	CKD without cognitive dysfunction (n = 30)
Age (years)
20–29	16	13	0	7	8
30–39	13	12	0	6	3
40–49	1	5	0	17	19
50–59	0	0	0	0	0
60–69	0	0	0	0	0
70–79	0	0	7	0	0
80–89	0	0	3	0	0
Gender
No. of males	16	12	6	15	20
No. of female	14	18	4	15	10
Education level
Middle school (6–8)	0	5	5	17	16
Secondary school (8–9)	0	4	2	2	4
High school (10 − 12)	21	10	3	8	9
Graduate	5	11	0	2	1
Any diploma	4	0	0	1	0
Place of living
Rural	22	24	1	27	26
Urban	8	6	9	3	4
Marital status of patients
Single	12	17	0	5	5
Married	18	13	10	25	25
Urea (mg/dl)	22.3 ± 5.6	19.5 ± 2.7	12.5 ± 2.1	79.7 ± 26	73.3 ± 25
Creatinine (mg/dl)	0.53 ± 0.2	0.42 ± 0.3	0.3 ± 0.2	6.8 ± 3.6	6.9 ± 3.6
Hemoglobin (g/dl)
Male	14 ± 1.7	6.5 ± 1.2	10.8 ± 1.5	6.8 ± 1.6	7.7 ± 2
Female	13 ± 1.4	5.8 ± 1.9	9.6 ± 1.4	6.5 ± 1.4	6.5 ± 3

Urea (mg/dl), creatinine (mg/dl) and hemoglobin (g/dl) values are expressed as Mean ± SD.