Table 2.

Comparison of clinical symptoms (mean ± SD)

Group	n	Time to first ambulation (h)	Time to swelling regression (d)	Time to extubation by vacuum sealing drainage (d)	Hospital stay (d)
Observation group	142	18.53±1.93	10.04±1.05	8.73±0.75	11.35±1.47
Control group	121	25.74±2.68	16.96±1.57	12.56±1.32	15.78±1.84
t	-	39.070	42.540	29.450	21.700
P	-	< 0.001	< 0.001	< 0.001	< 0.001