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Table 2 Catheterization related variables

From: Effect of bevel direction on the success rate of ultrasound-guided radial arterial catheterization

Parameter Bevel-Up group (n =102) Bevel-down group (n = 102) 95 % CI of mean Odds ratio P value
Attempts      
 First attempt 73 (71.6 %) 86 (84.3 %) 0.6216-0.7642/ 2.14 0.028
0.7603-0.9011
 Second attempt 23 (22.5 %) 14 (13.7 %) 0.1552-0.3157/ 1.83 0.103
0.0836-0.2173
 Third attempt 6 (5.9 %) 2 (2.0 %) 0.02720.1224/ 3.13 0.151
0.0054-0.0687
overall 102 (100 %) 102 (100 %)    1.00
Mean cannulation time(sec) 35.9 ± 7.6 33.3 ± 6.3 34.4-37.4/   0.011
32.1-34.6
Posterior wall hematoma 22 (21.6 %) 11(10.8 %) −0.0009 - 0.215 2.28 0 .0365