Characteristic.n (%)

Group 1

N = 127

Group 2

N = 127

Significance

Acute infection (active)

9 (7.0)

0 (0)

p < 0.05*

Haemozin (past )

50 (39.3)

50 (39.3)

p > 0.05

Thickening of basement membrane

13 (10.2)

35 (27.5)

p < 0.05)*

Calcification

69 (54.3)

64 (50.3)

p < 0.05*

Prominent synchytial knots

94 (74)

92 (72.4)

p > 0.05

Parasites/pigments and fibolin (chronic)

35 (27.5)

2 (1.5)

p < 0.05*