Cooled radiofrequency ablation of the genicular nerves for chronic pain due to osteoarthritis of the knee: a cost-effectiveness analysis based on trial data

Table 1 OKS and predicted utility scores (EQ-5D)^a: used to model CRFA and IAS in primary analysis

		Baseline^b		Month 1		Month 3		Month 6		Month 12
		CRFA	IAS	CRFA	IAS	CRFA	IAS	CRFA	IAS	CRFA	IAS
OKS	Mean (SD)	16.7 (4.4)	16.9 (5.1)	33.3 (9.2)	29.4 (8.5)	34.6 (8.3)	24.6 (7.6)	35.7 (8.8)	22.4 (8.5)	34.3 (11.1)	22.0 (16.6)
	Sample size^c	76	75	67	69	65	68	58	67	52	3
	SE	0.50	0.59	1.13	1.03	1.02	0.93	1.16	1.04	1.54	9.61
Mapped EQ-5D	Mean (SE)	0.335 (0.029)	0.340 (0.030)	0.708 (0.033)	0.619 (0.031)	0.735 (0.032)	0.512 (0.030)	0.761 (0.035)	0.463 (0.032)	0.729 (0.042)	0.453 (0.238)

Abbreviations: CRFA cooled radiofrequency ablation, IAS intra-articular steroid, OKS Oxford Knee Score, SD standard deviation, SE standard error
^aIncludes all available observations
^bTime points as per clinical trial NCT02343003
^cSample size represents subjects with available data at each time point. Based on full analysis set from clinical trial NCT02343003

ISSN: 1471-2474