Table 1.

Descriptive statistics and results of the Mann-Whitney U test of MGV calculated on the dog samples classified on the basis of histopathological lesions

		Presence of the considered lesion			Absence of the considered lesion
Histological changes	No. of samples	Mean ± SD	Median	Range	Mean ± SD	Median	Range
No relevant findings	21	49.88 ± 18.7	41.24	26.9–93.8	47.96 ± 21.42	38.76	16.16–94.76
Glomerulosclerosis	33	47.79 ± 22.88	37.7	16.1–94.7	48,68 ± 18.67	41.36	25.47–93.08
Tubular atrophy*	11	66.8 ± 21.78	66.94	31.42–94.76	44.93 ± 18.63	37.77	16.13–93.08
Fibrosis	12	51.83 ± 27.68	44.54	20.23–94.76	47.53 ± 19.04	40.07	16.16–93.08
Glomerular atrophy	10	48.16 ± 20.94	41.16	25.69–77.35	48.29 ± 20.76	40.91	16.16–94.76
Interstitial nephritis	23	48.94 ± 22.61	44.03	20.23–94.76	47.96 ± 19.76	39.54	16.16–93.08
Glomerulonephritis	9	37.34 ± 8.75	35.52	25.69–49.36	49.83 ± 21.31	41.63	16.16–94.76
Neoplasia	5	33.05 ± 6.7	33.69	25.47–41.63	49.20 ± 20.81	44.03	16.16–94.76

*Statistically significant differences –p < 0,05