Table 3.

Comparison of Complication Incidence [n (%)]

Complication	Control (n=63)	Observation (n=64)	x²	P
Pneumothorax	2 (3.17)	0 (0.00)	–	–
Hematoma	1 (1.59)	2 (3.13)	–	–
Local Infection	0 (0.00)	2 (3.13)	–	–
Peripheral Nerve Injury	0 (0.00)	1 (1.56)	–	–
Spinal Cord Injury	0 (0.00)	0 (0.00)	–	–
Skin Numbness	1 (1.59)	2 (3.13)	–	–
Total Incidence	4 (6.35)	7 (10.94)	0.844	0.358