Table II Histopathology of allograft biopsies of the training set and validation set

IF/TA, IF/TA with no other etiology. Transplant biopsies were normal in stable renal recipients.

Training set (mean ± S.D.)Validation set (mean ± S.D.)
IF/TA group (n = 8)CAAR group (n = 10)IF/TA group (n = 10)CAAR group (n = 11)
Glomerular double contours (cg)01.89 ± 0.7a01.82 ± 0.75a
Interstitial fibrosis (ci)1.88 ± 0.92.11 ± 0.7b1.9 ± 0.562.18 ± 0.6b
Tubular atrophy (ct)1.88 ± 0.92.11 ± 0.7b1.9 ± 0.562.18 ± 0.6b
Arterial fibrous intimal thickening (cv)0.88 ± 0.61.56 ± 1.0a1.6 ± 0.691.36 ± 0.67a
Hyaline arteriolar thickening (ah)0.75 ± 1.11.56 ± 1.1b1.5 ± 0.71.73 ± 0.46b
Peritubular capillaritis (ptc)0.75 ± 0.41.33 ± 0.7b0.4 ± 0.691.64 ± 0.5a
  • a Significant Mann-Whitney test (p < 0.05).

  • b Non-significant Mann-Whitney test.