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. 2025 Jul 3;26:346. doi: 10.1186/s12882-025-04271-4

Table 2.

Demographic characteristics of incident patients with primary IgAN in 2022

Patient characteristics Lower bound Upper bound
Female Male Total Female Male Total
Age (in years) Mean ± SD - 34.5 ± 18.7 35.6 ± 17.3 - 42.7 ± 22.1 43.6 ± 22.4
Median (IQR) - 38 (29) 42 (27) - 48 (32) 48 (36)
Age groups (in years) 0–17 (n%) 0 (0.00) ≤4a (≤66.7) ≤4a (≤57.1) ≤4a (≤100.0) ≤4a (≤21.1) ≤4a (≤17.4)
18–29 (n, %) 0 (0.00) ≤4a (≤66.7) ≤4a (≤57.1) 0 (0.00) 5 (26.3) 5 (21.7)
30–39 (n, %) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) ≤4a (≤21.1) ≤4a (≤17.4)
40–49 (n, %) ≤4a (≤100.0) ≤4a (≤66.7) ≤4a (≤57.1) ≤4a (≤100.0) ≤4a (≤21.1) ≤4a (≤17.4)
50–59 (n, %) 0 (0.00) ≤4a (≤66.7) ≤4a (≤57.1) 0 (0.00) 5 (26.3) 5 (21.7)
60–69 (n, %) 0 (0.00) 0 (0.00 0 (0.00 ≤4a (≤100.0) ≤4a(≤21.1) ≤4a (≤17.4)
70–79 (n, %) 0 (0.00) 0 (0.00 0 (0.00 0 (0.00) 0 (0.00) 0 (0.00)
≥80 (n, %) 0 (0.00) 0 (0.00 0 (0.00 0 (0.00) ≤4a (≤21.1) ≤4a (≤17.4)
Total (n, %) ≤4a (≤57.1) 6 (85.7) 7 (100.0) ≤4 a (≤17.4) 19 (82.6) 23 (100.0)

aDue to data protection regulations patient counts ≤ 4 and corresponding percentages cannot be reported