Table 2

- Demographic features of the patients regarding the stage of facet joint osteoarthritis.

Variables	Grade of FJO			P-values
Variables	1 (n=38)	2 (n=28)	3 (n=25)	P-values
Age, mean±SD	59.05±11.60	66.71±7.29	68.36±8.82	0.006*
				0.001†
				0.811‡
Gender, n(%)
Female	27 (71.1)	21 (75.0)	22 (88.0)	0.283
Male	11 (28.9)	7 (25.0)	3 (12.0)	0.283
BMI	28.55 (26.22-29.38)	29.10 (27.53-32.02)	30.44 (28.57-	0.032
Duration of pain (weeks)	36 (18-36)	36.0 (15.0-36.0)	36.0 (18.0-50.0)	0.711
VAS-baseline	7.0 (7.0-8.0)	8.0 (7.0-8.0)	8.0 (7.0-8.0)	0.055
VAS-1^st month	1.0 (0.75-3.0)	1.5 (1.0-3.0)	3.0 (1.0-4.5)	0.129
VAS-6^th month	2.0 (1.0-4.3)	2.5 (1.0-5.0)	3.0 (1.0-6.0)	0.481
VAS-12^th month	3.0 (1.0-6.3)	3 (1.3-7.0)	6.0 (2.0-7.0)	0.138

Values are presented as numbers and percentages (%) or median and interquartile range ([IQR]: 25th-75th) or mean ± standard deviation (SD).

BMI - body mass index, VAS - visual analog scale, FJO - facet joint osteoarthritis

↵* For groups 1 and 2,
↵† for groups 1 and 3, and
↵‡ for groups 2 and 3.