Table 3.

Number of patients with different grades of shivering in the three treatment groups after arrival in recovery room in 15 minute.

		Grade 0/1/2/3
Shivering score	Group S	Group P	Group G
0	9	26*	21*	p<0.05
1	1	1	2
2	2	1	1
3	18†	2	6	p<0.05
4	0		0

^*p<0.05 compared with the other groups, using the Chi-square test,

^†p<0.05 compared with the other groups, using the Chi-square test