Table 1: Characteristics of 149 patients with analyzable renal biopsy specimens between January 2002 and December 2009.

Age (years)Mean ± SEM
Age < 4036%
40 ≤ age < 6034%
Age ≥ 6030%
Male64%
History of hypertension44%
Microhematuria45%
Gross hematuria17%
Family history of hematuria3%
History of diabetes11%
Mean eGFR (MDRD mL/min/1.73 m²)Mean ± SEM
Stage of renal failureeGFR ≤ 29 mL/min/1.73 m²15%
30 ≤ eGFR ≤ 59 mL/min/1.73 m²31%
60 mL/min/1.73 m² ≤ eGFR54%
Serum Ig AIncreased > 3.6 g/L18%
Normal ≤ 3.6 g/L34%
Not performed48%
Proteinuria (g/24 h)3.44 + 0.43
Proteinuria < 0.3 g/24 h12%
0.3 g/24 h ≤ proteinuria
< 1 g/24 h
20%
1 g/24 h ≤ proteinuria < 3 g/24 h34%
Proteinuria ≥ 3 g/24 h34%