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Table 1 Background characteristics of the patients

From: Heterogeneity of clinical indices among the older dialysis population—a study on Japanese dialysis population

Number of patients 306,925
Sex (male/female) 194,965/111,960
Age (mean ± SD) 67.21 ± 12.51
Vintage (years, number of patients, %)
 <2 68,475 (22.3)
 2–4 76,589 (25.0)
 5–9 77,197 (25.2)
 10–14 39,490 (12.9)
 15–19 20,874 (6.8)
 20–24 11,421 (3.7)
 25–29 6611 (2.2)
 30+ 6155 (2.0)
Primary diagnoses (numbers, %)
 Diabetes 115,484 (37.6)
 Glomerulonephritis 99,492 (32.4)
 Nephrosclerosis 26,569 (8.7)
 Polycystic kidney 10,683 (3.5)
 Others or unknown 54,697 (17.8)