Document Classification

Section Type: RESULTS

Text: There was a direct relation between the number of patients with a collateral perfusion pressure of < 40 mm Hg (shunted group) and the severity of the contralateral carotid stenosis : 6 of 62 (10 %) for normal carotid, 7 of 43 (16 %) for < 50 % stenosis (OR = 1. 82), 12 of 69 (17 %) for 50-69 % stenosis (OR = 1. 97), 3 of 10 (30 %) for 70-99 % stenosis (OR = 4, CI = 0. 81-19. 68), and 9 of 13 (70 %) for occlusion (OR = 21, CI = 4. 98-89. 32) (p < 0. 0001).