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Table 2 Patient characteristics by age group

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

Age groups 15–29 30–44 45–59 60–74 75–89 90+
Sex
 Male 749 (66.8) 10,315 (68.4) 38,610 (67.8) 91,189 (64.8) 51,997 (59.0) 2032 (42.9)
 Female 372 (33.2) 4756 (31.6) 18,340 (32.2) 49,583 (35.2) 36,150 (41.0) 2704 (57.1)
Vintage (years, number of patients, %)
 <2 383 (34.2) 3556 (23.6) 11,484 (20.2) 28,358 (20.2) 23,464 (26.6) 1163 (24.6)
 2–4 323 (28.8) 3756 (24.9) 12,996 (22.8) 32,734 (23.3) 25,177 (28.6) 1565 (33.1)
 5–9 263 (23.5) 3564 (23.7) 13,807 (24.3) 35,296 (25.1) 22,800 (25.9) 1447 (30.6)
 10–14 103 (9.2) 2134 (14.2) 7782 (13.7) 19,446 (13.8) 9598 (10.9) 425 (9.0)
 15–19 34 (3.0) 1176 (7.8) 4673 (8.2) 10,882 (7.7) 4007 (4.5) 102 (2.2)
 20–24 11 (1.0) 605 (4.0) 2890 (5.1) 6174 (4.4) 1715 (1.9) 26 (0.5)
 25–29 4 (0.4) 206 (1.4) 1734 (3.0) 3890 (2.8) 774 (0.9) 3 (0.1)
 30+ 0 (0.0) 69 (0.5) 1564 (2.7) 3948 (2.8) 572 (0.6) 2 (0.0)
Primary diagnoses (numbers, %)
 Diabetes 61 (5.4) 4268 (28.3) 21,653 (38.0) 57,903 (41.1) 30,672 (34.8) 920 (19.4)
 Glomerulonephritis 389 (34.7) 5635 (37.4) 20,180 (35.4) 46,654 (33.1) 25,273 (28.7) 1344 (28.4)
 Nephrosclerosis 34 (3.0) 614 (4.1) 2411 (4.2) 8917 (6.3) 13,311 (15.1) 1279 (27.0)
 Polycystic kidney 21 (1.9) 433 (2.9) 2738 (4.8) 5373 (3.8) 2050 (2.3) 63 (1.3)
 Others or unknown 615 (54.9) 4119 (27.3) 9967 (17.5) 21,917 (15.6) 16,832 (19.1) 1130 (23.9)
  1. The number of patients (percentage) in each age group is shown. Patients with missing or unknown values for age or background characteristics were excluded. Therefore, the sum of the numbers is not equal to the total population shown in Table 1