Duration of Observation                                     VAS (mm) P value
Pregabalin Group (n=26) Control Group  (n=26)
Min-Max Median Min-Max Median
Before surgery 0-20 0 0-20 0 P>0.05
Early after surgery 30-60 50 50-75 60 p=0.000*
1hr  after surgery 30-50 40 40-75 55 p=0.000*
8hr  after surgery 30-50 40 40-60 50 p=0.000*
24hr  after surgery 20 – 40 20 20-40 30 p=0.003*
Data are shown in minimal, maximal and mean value, deviation standard and probability were tested with Mann Whitney-U test, p<0.05 is significant. *P value<0.05.
Table 1: VAS variation on both groups during observation.