Statistically significant differences were detected between group 1 and group 2 in the mean pain score on VAS ( 2.53 1.34 vs 1.63 1.09 , P = 0.002 , Mann-Whitney U test ) , mean postprocedural State Anxiety Inventory pain score ( 39.4 6.5 vs 34.5 5.8 ) , and postprocedural pulse rate ( 79.8 5.5 vs 76.0 7.3 ) ( P < 0.001 for both , t test ) .