Table 3.

Comparison of surgical indicators (χ±s)

Group	Number of cases	Operation time (min)	Length of hospitalization (d)	Surgical blood loss (mL)	Duration of healing time (d)
IIN group	13	149.28±21.22	16.32±2.11	421.28±30.98	83.21±0.43
PO group	25	123.98±20.21	18.98±2.32	459.71±32.11	93.71±0.71
X2	-	4.123	4.096	4.117	34.78
P	-	<0.001	<0.001	<0.001	<0.001