Table 2.

Comparison of surgical parameters

Group	Operation time (min)	Hospital stays (day)	Amount of intraoperative bleeding (mL)
Observation group (n=154)	46.7±5.6	9.3±1.3	54.9±7.4
Control group (n=154)	46.9±5.9	9.2±1.5	54.0±6.8
t	0.305	0.625	1.111
P	0.76	0.532	0.267

Note: t: data from t test.