Statistical analysis
The number of energy applications required to successfully puncture the septal tissue for each treatment condition was assessed as a mean with standard deviation (95% confidence interval). The paired t- test was used to compare the number of applications. Levene’s test was used to assess the homogeneity of variances. A probability value of <0.05 was used to determine statistical significance. Analyses were performed using Excel software (Microsoft Office 10, Microsoft, Seattle, USA).