Table 8.

Adverse Effects (Number of Patients)

	Group S (No.)	Group F (No.)	P value
Hypotension	2	3	0.865
Position discomfort	0	12	<0.001
Needle discomfort (paresthesia)	0	4	<0.001
Nerve injury	2	2	1.00
Back pain	0	11	<0.001