Table 1.

Epidemiological data (n = number of patients).

Data	Patients (n = 111)
Clinical data
Age (average ± SD), year	44.3 ± 14.2
Female sex, n(%)	57(51)
Hemodialysis data
Hemodialysis duration (average ± SD), month	146 ± 80
Causal nephropathy, n(%)
Diabetes	7(6.2)
Chronic glomerulonephritis	19(17.1)
Nephroangiosclerosis	6(5.4)
Unknown nephropathy	50(45.0)
Others	29(26.1)

SD: standard deviation.