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.