Document Classification

Section Type: RESULTS

Text: Nitrous oxide had no significant effect on the risk of the primary outcome (112 [7. 5 %] vs 248 [6. 9 %] ; odds ratio [OR], 1. 08 ; 95 % confidence interval [CI], 0. 82-1. 44 ; 99 % CI, 0. 75-1. 57 ; P = 0. 58), MI (89 [6. 0] vs 204 [5. 6] ; OR, 0. 99 ; 95 % CI, 0. 75-1. 31 ; 99 % CI, 0. 69-1. 42 ; P = 0. 94), stroke (6 [0. 4 %] vs 28 [0. 8 %] ; OR, 0. 85 ; 95 % CI, 0. 26-2. 82 ; 99 % CI, 0. 17-4. 11 ; P = 0. 79), death (40 [2. 7 %] vs 100 [2. 8 %] ; OR, 1. 04 ; 95 % CI, 0. 6-1. 81 ; 99 % CI, 0. 51-2. 15 ; P = 0. 88) or clinically significant hypotension (219 [14. 7 %] vs 544 [15. 0 %] ; OR, 0. 92 ; 95 % CI, 0. 74-1. 15 ; 99 % CI, 0. 70-1. 23 ; P = 0. 48).