Table 3. Comparison of Mean Time of First Request for the Analgesic in the Case and Control Groups.

The Variable Under Study	Group	Number	Average Rating	Median (Q1 - Q3)	P Value
Time of taking the first dose of analgesic	Ketamine	32	45.15	600 (540 - 720)	0.001
	Normal saline	32	20.47	240 (180 - 655)