Prospective Single-Site Experience with Radiofrequency-Targeted Vertebral Augmentation for Osteoporotic Vertebral Compression Fracture

Table 2

Pain medication use before and 3 months after radiofrequency-targeted vertebral augmentation.

WHO drug category	Pretreatment	3 months	𝑃 value
	(𝑛=20)	(𝑛=19)
Class 0, no drugs	6 (30)	15 (79)	<0.01
Class 1, nonopioid analgesics	2 (10)	1 (5)
Class 2, weak opiate derivative	10 (50)	3 (16)
Class 3, strong opiate derivative	2 (10)	0 (0)

P value compares the ordinal distribution of pain medication use from pretreatment to 3 months; calculation based on paired cases (𝑛=19).