. 2015 May 29;15(1):99–105. doi: 10.1007/s12663-015-0791-4

Table 3.

Comparison of onset of anesthesia between carbonated bupivacaine with adrenaline and bupivacaine with adrenaline using Mann–Whitney U test

	Group	N	Mean	SD	U value	P value
Onset of anesthesia in minutes	Bupivacaine with adrenaline	50	3.70	0.953	0547	<0.001*
Onset of anesthesia in minutes	Carbonated Bupivacaine with adrenaline	50	2.66	0.872	0547	<0.001*

The mean time for onset of anesthesia for bupivacaine with adrenaline was 3.70 ± 0.953 and carbonated bupivacaine with adrenaline was 2.66 ± 0.872. This was found to be statistically significant using Mann–Whitney U test. This means carbonated bupivacaine has least time of onset and this is proved statistically

* Statistically significant