Table 3. The comparison of individual procedure duration of the bipolar electrocoagulation group and traditional electric knife group.

Group	Bipolar electrocoagulation	Traditional electric knife	P value	t
Unilateral thyroid surgery			<0.001	3.948
Time (min)	10.25±6.16	20.34±7.24
n	10	30
Total thyroidectomy			<0.001	16.262
Time (min)	16.25±7.15	35.68±8.25
n	68	120
Total thyroidectomy + level VI neck dissection			<0.001	8.238
Time (min)	12.12±5.25	20.68±7.26
n	64	108

Values are presented as mean ± standard deviation, unless otherwise noted.