Table 4.

The characteristics of complications in outpatient surgery

Author	Total	Events with complication	Complication rate (%)	Complication
Adamson [16]	629	13	2.07	Dysphagia (n = 11), surgical site infection (n = 1), hematoma (n = 1)
Lied [17]	96	4	4.17	Hematoma (n = 1), dysphagia (n = 2), deterioration of neurological function (n = 1)
Liu [18]	45	0	0.00	None
Sheperd [19]	152	6	3.95	Pain (n = 2), dysphagia (n = 2), nausea (n = 1), cervical swelling (n = 1)
Shin [20]	390	0	0.00	None
Silvers [21]	50	1	2.00	Vocal paralysis (n = 1)
Stiber [22]	30	3	10.00	Dysphagia (n = 3)
Tally [23]	119	0	0.00	None
Trahan [24]	59	1	1.69	Neck swelling and difficulty breathing (n = 1)
Walid [25]	97	1	1.03	Infection (n = 1)
Wohns [26]	26	0	0.00	None