Table 4.

Comparison of pain severity (no/mild/moderate/severe; n) between the two groups at different time points after extubation in resting and motion state

Time (h)	Group C (n = 39)	Group N (n = 38)	P value
Resting state
30 min	15/24/0/0	5/32/1/0	0.018
6 h	0/39/0/0	0/38/0/0	/
12 h	0/30/8/1	0/33/5/0	0.458
24 h	1/38/0/0	0/38/0/0	0.506
36 h	0/39/0/0	0/38/0/0	/
48 h	6/33/0/0	5/33/0/0	0.780
Motion state
30 min	25/14/0/0	27/11/0/0	0.515
6 h	8/31/0/0	8/30/0/0	0.953
12 h	0/38/0/1	0/37/1/0	> 0.999
24 h	0/39/0/0	0/38/0/0	/
36 h	3/36/0/0	2/36/0/0	> 0.999
48 h	2/37/0/0	5/33/0/0	0.407