Table 4. Pain Score Reduction for the Time Periods of 0-2, 0-4, 0-6, 0-12, and 0-24 Hours After Radical Neck Dissection Surgery for the PAND and Control Groups.

Time Period (Hours)	PAND Group	Control Group	P Value	Statistical Significance
0 - 2	0.89 ± 1.47	0.50 ± 1.61	0.28	Not significant
0 - 4	1.44 ± 1.48	1.00 ± 1.76	0.25	Not significant
0 - 6	1.50 ± 1.54	1.16 ± 1.61	0.37	Not significant
0 - 12	2.28 ± 1.52	1.28 ± 1.80	0.01	Significant
0 - 24	2.66 ± 1.51	1.88 ± 2.08	0.07	Not Significant