Spss for windows software package ver 19

SPSS for Windows software package ver. 19.0 (SPSS, Inc., Chicago, IL, USA) was used for statistical analysis. Data are presented as mean ± SD or median (range) as appropriate. The categorical end point variables were analyzed using the χ2 test, or Fisher exact test if the subject count in any contingency table cell was expected to be <5. Differences with P value <0.05 and 95 % CIs excluding 0 were considered statistically significant. Student’s t-test was used for group comparison of age, height, weight, and radial artery diameter and depth from the skin. A p-value of 0.05 was taken to indicate statistical significance.

SPSS for Windows software package ver. 19.0 (SPSS, Inc., Chicago, IL, USA) was used for statistical analysis. Data was shown as mean ± SEM and analyzed using unpaired t-test. For categorical data like adverse events, Chi-square test was applied. In this study, P < 0.05 was accepted to be statistically significant.