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. 2008 Oct 20;14:1886–1892.

Table 2. Histological grading of Picrosirius red staining in iris samples.

Group n Median grading Mean grading Standard deviation Mann–Whitney U 2-sided
PACG
9
4
3.89
0.33
<0.001
POAG
16
2
2.7
0.52
<0.001
DSAEK 3 1 1 0 <0.001

The differences in the mean grade between PACG and POAG, PACG and Control, and POAG and Control were significant (p<0.001). n denotes the number of patients in each group.