Table 2.

Comparison of the average amount of pain between study groups

Variable	Group	Number	Mean± Standard Deviation	Min-Max	P -value
Pain at 3h	Placebo	30	4.9±1.2	3 - 8	<0.001
	Tizanidine	30	2.0±1.3	0 - 4
Pain at 6h	Placebo	30	5.8±1.2	4 - 8	<0.001
	Tizanidine	30	2.1±1.5	0 - 5
Pain at 12h	Placebo	30	6.6±1.1	4 - 9	<0.001
	Tizanidine	30	2.7±1.6	0 - 5
Pain at 18h	Placebo	30	2.6±1.1	1 - 5	<0.001
	Tizanidine	30	1.2±1.1	0 - 5
Pain at 24h	Placebo	30	1.8±1.0	0 - 4	<0.001
	Tizanidine	30	0.8±1.0	0 - 4