Table 3. Severity of Sore Throat and Hoarseness during the First 24 Hours after Extubation.

	Group C (n = 45)	Group Kpre (n = 47)	Group Kpost (n = 45)	Group D (n = 43)	P value
Sore throat (0/1/2/3)
Rest
1 h	2/11/13/19	3/18/12/14	3/11/10/21	2/13/6/22	0.563
6 h	13/17/5/10	13/18/13/3	12/17/12/4	18/13/5/7	0.130
24 h	25/11/5/4	26/15/6/0	20/16/6/3	28/9/6/0	0.277
Swallowing
1 h	1/5/13/26	2/15/13/17	1/8/14/22	1/4/13/25	0.215
6 h	1/16/15/13	5/18/16/8	5/13/16/11	8/15/10/10	0.406
24 h	3/30/7/5	10/25/10/2	8/17/17/3	14/16/8/5*	0.013
Hoarseness (0/1/2/3)
1 h	3/12/23/7	3/16/18/10	5/12/18/10	3/15/19/6	0.920
6 h	8/22/12/3	11/24/11/1	6/23/15/1	8/24/10/2	0.910
24 h	11/28/6/0	19/23/4/1	16/22/7/0	21/19/3/0	0.312

Data are presented as number of patients. Severity of sore throat was assessed using 4 graded scale: 0, no sore throat; 1, mild sore throat; 2, moderate sore throat; 3, sever sore throat. Severity of hoarseness was assessed using 4 graded scale: 0, no hoarseness; 1, mild hoarseness; 2, moderate hoarseness; 3, severe hoarseness. The statistical significance was accepted with P values less than 0.05 for primary comparison among groups and 0.0083 for post-hoc multiple comparisons between pairwise groups (Bonferroni adjustment; 0.05/6). ^*P < 0.0083 compared to Group C.