Table 3.

Oswestry Disability Index Score (%) Stratified by Treatment Group and Time Point

Time point	Placebo	Lateral Branch Denervation (n=14)	Lateral Branch Denervation Crossover (n=11)
Baseline	(n=14)
Mean (SD, range)	47.9 (9.3, 28–59)	37.1 (10.6, 18–49)	43.6 (14, 16–70)
Median (interquartile range)	50.5 (44–56)	41, (26–46)	41 (34–56)
One month	(n=14)	*, **, ***
Mean (SD, range)	43.6 (14, 16–70)	20.9 (10.9, 4–38)	34.3 (16.2, 4–58)
Median (interquartile range)	41 (34–56)	19 (14–29)	33 (24–46)
Three months	(n=2)	***	***
Mean (SD, range)	24 (8.5, 18–30)	18.5 (11.6, 0–36)	19.4 (18.1, 0–44)
Median (interquartile range)	24 (18–30)	20 (9.5–27)	16 (4–44)
Six months		***	***
Mean (SD, range)	No data	22.6 (10.6, 7–40)	24.3 (21.0, 0–56)
Median (interquartile range)		20 (16–24)	20 (8–42)

^*P<0.05 as compared to placebo group

^**P<0.05 as compared to lateral branch denervation crossover group

^***P<0.05 as compared to baseline of the respective group