Table 2.

Glomerulopathies by age strata

Glomerulopathy TypeBiopsy, NN (% within Age Strata)Std. Freq. %
0–14 yr15–39 yr40–64 yr65–99 yrAll Ages
Primary
 IgAN19,959709 (17.2)12,719 (36.0)6258 (22.7)273 (7.5)19,959 (28.3)28.1
 MN14,929135 (3.3)4386 (12.4)8781 (31.9)1627 (45.0)14,929 (21.1)23.4
 MCD11,810841 (20.4)7018 (19.9)3460 (12.6)491 (13.6)11,810 (16.7)17.1
 FSGS3811238 (5.8)1829 (5.2)1498 (5.4)246 (6.8)3811 (5.4)5.5
 MsPGN2321213 (5.2)1033 (2.9)1003 (3.6)72 (2.0)2321 (3.3)3.2
 MPGN48510 (0.2)142 (0.4)274 (1.0)59 (1.6)485 (0.7)0.7
Secondary
 Lupus GN6013335 (8.1)3872 (11.0)1739 (6.3)67 (1.9)6013 (8.5)7.4
 Purpura GN2308791 (19.1)1011 (2.9)430 (1.6)76 (2.1)2308 (3.3)3.4
 TBMN1600432 (10.5)592 (1.7)557 (2.0)19 (0.5)1600 (2.3)2.0
 DN12350 (0.0)176 (0.5)925 (3.4)134 (3.7)1235 (1.7)1.7
 HBVAN103229 (0.7)533 (1.5)439 (1.6)31 (0.9)1032 (1.5)1.4
 Amyloidosis5360 (0.0)18 (0.1)352 (1.3)166 (4.6)536 (0.8)0.8
Unclassified1013108 (2.6)474 (1.3)393 (1.4)38 (1.1)1013 (1.4)1.4
  • Std. Freq., age- and region-standardized frequency; MsPGN, mesangial proliferative GN; MPGN, membranoproliferative GN (type 1); Lupus GN, lupus nephritis; Purpura GN, Henoch-Schonlein purpura nephritis; TBMN, thin basement membrane nephropathy; DN, diabetic nephropathy; HBVAN, hepatitis B virus-associated nephritis.