Statistics
Exported text files were converted to Excel and imported to GraphPad Prism version 4.03 (GraphPad Software, San Diego, CA). Comparisons were made between ACCURESP™ “on” and “off” settings based on the means and standard deviations of biophysical data (i.e. ILD, RF duration, CF, impedance drop and FTI), or medians along with the 1stand 3rd quartile (IQR), where these were determined to be skewed. Any differences between these RMA settings were tested using the unpaired t-test, or the Mann-Whitney test where a normal distribution could not be assumed. Pearson correlation coefficients were calculated to determine the strength of association between ACCURESP™ “off” ITD and the difference (ACCURESP™ “on” minus “off”) in RF duration, FTI and ILD. In this exploratory analysis, significance was set at the 5% level.