The VAS for pain at umbilical port was less than epigastric port at 1 , 6 , 12 , 24 and 36 h after surgery ( 5.9 1.1 vs. 4.1 1.5 , 4.6 0.94 vs. 3.5 1.05 , 3.9 0.85 vs. 2.4 0.79 , 3.05 0.87 vs. 2.15 0.87 , respectively ) and the difference was statistically significant ( p-value < 0.001 ) .
