Table 3. Descriptive statistics of age, follow-up, surgery time, preop, postop, & last F/u VAS of foraminoplasty patients.

Variable	N	Minimum	Maximum	Mean	Std. deviation
Age	176	19	84	60.59	13.565
Fu months	176	60	83	69.30	5.658
Surgery time (min)	176	23	114	60.32	21.672
PreVAS	176	1	10	6.87	1.961
PostVAS	176	0	8	3.15	1.597
Last F/U VAS	176	0	10	2.98	1.754
Valid N (listwise)	176

VAS, visual analog scale.