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Table 3 Serum concentration of immunoglobulins and complement components

From: IgA vasculitis nephritis clinical course and kidney biopsy – national study in children

  Nephrotic proteinuria + hematuria Gr.A N = 55 Non-nephrotic proteinuria + hematuria
Gr B N = 38
Isolated hematuria
Gr C N = 13
P
Serum IgA (mg/dl) 213.23 +/− 100.3 252.52+/− 110.58 246.38 +/− 130.94 NS
Number of patients with elevated IgA (n%) 16 (15%) 17 (16%) 7 (7%) NS
Serum C3 (mg/dl) 114.56 +/−  31.56 121.22 +/− 26.56 113.42 +/− 16.22 NS
Number of patients with desreased C3 level (n%) 10 (9%) 1 (1%) 0 (0%) < 0.05*
Serum C4 (mg/dl) 23.79 +/− 9.15 26.43 +/−11.03 26.55 +/− 8.08 NS
Number of patients with desreased C4 level (n%) 9 (8%) 5 (5%) 0 (0%) < 0.05**
Number of patients with desreased C3 and C4 levels (n%) 5 (5%) 0 (0%) 0 (0%) < 0.05***
  1. * A vs B, A vs C, ** A vs C, B vs C, ***A vs B, A vs C