Table 2.

Histological score according Karpinski

Histological score
Glomerular score	0 = no globally sclerosed glomeruli
	1 = < 20% global glomerulosclerosis
	2 = 20-50% global glomerulosclerosis
	3 = > 50% global glomerulosclerosis
Tubular score	0 = absent
	1 = < 20% of tubules affected
	2 = 20-50% of tubules affected
	3 = > 50% of tubules affected
Interstitial score	0 = absent
	1 = < 20% of cortical parenchyma replaced by fibrous connective tissue
	2 = 20-50% of cortical parenchyma replaced by fibrous connective tissue
	3 = > 50% of cortical parenchyma replaced by fibrous connective tissue
Vascular score	0 = absent
	1 = increased wall thickness but to a degree that is less than the diameter of the lumen
	2 = wall thickness that is equal or slightly greater than the diameter of the lumen
	3 = wall thickness that far exceeds the diameter of the lumen, with extreme narrowing