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Table 1 Fisher’s exact probabilities for comparison of patency rate of vascular grafts with different topography ( p = 0.021)

From: The in vivo blood compatibility of bio-inspired small diameter vascular graft: effect of submicron longitudinally aligned topography

Intimal topography

Vascular occlusion

Vascular patency

Total

Patency rate

Smooth topography

5 (2.5)

2 (4.5)

7

28.60%

Aligned topography

0 (2.5)

7 (4.5)

7

100%

Total

5

9

14

-

  1. The number in the bracket represents expected count. As N < 40, Fisher’s exact probability was chosen to compare the patency rate of vascular grafts with different topography.