Table 3.

Pre- and postintervention changes in the ODI in the three groups.

ODI	Before intervention	After intervention	Δ	Proportion of patients with >30% decrease in the ODI (%, CI)	Intra-p value	Inter-p value
MBB (N = 33)	24.45 ± 7.10	20.64 ± 8.24	3.82 ± 6.62	24.2, 9.6–38.9	0.002†∗	0.774‡
FJI (N = 17)	24.12 ± 6.63	20.18 ± 10.00	3.94 ± 5.97	29.4, 7.8–51.1	0.015†∗
MBB + FJI (N = 16)	21.44 ± 9.49	16.38 ± 7.47	5.06 ± 3.59	25.0, 3.8–46.2	<0.001†∗

^†Paired t-test. ^‡One-way ANOVA. ΔPrepost. ∗Statistical significance. MBB, medial branch block; FJI, facet joint injection; MBB + FJI, combined treatment with MBB and FJI; ODI, Oswestry Disability Index; CI, confidence intervals.