Table 5.

Mean of postoperative time of first requirement for analgesics (hour) and mean meperidine requirement (mg) 36 hours after surgery among posterior and lateral groups

Variable	Posterior block	Lateral block	p-value
Hours post-op	13.3 (2.32)	6.73 (2.91)	<0.001
Meperidine dose (mg)	29.2 (10.7)	41.8 (18.5)	0.002

Notes: Data are presented as mean (±SD). p-values are calculated using Student’s t-test.