Table 2. Pathological features.

	Total n=257	Early-onset n=89	Later-onset n=168	p-value*
Glomerular classification				0.039
I	13	4	9
IIa	61	19	42
IIb	24	6	18
III	118	38	80
IV	41	22	19
IFTA				0.088
0	7	3	4
1	116	35	81
2	103	34	69
3	31	17	14
Interstitial inflammation				0.606
0	19	8	11
1	196	67	129
2	42	14	28
Arteriolar hyaline				0.019
0	29	8	21
1	130	38	92
2	98	43	55

IFTA, interstitial fibrosis and tubular atrophy.

*Mann-Whitney test. A two-tailed p < 0.05 was considered statistically significant.