A Cost-Utility Analysis of Robotic Arm-Assisted Total Hip Arthroplasty: Using Robotic Data from the Private Sector and Manual Data from the National Health Service

Table 1

Patient demographics and preoperative functional scores according to group.

Demographic	Descriptive		Group		Odds ratio/difference (95% CI)	value
			mTHA (n = 512)	rTHA (n = 48)
Sex (n, % of group)		Male	235 (45.9)	32 (66.7)	Reference
		Female	277 (54.1)	16 (33.3)	OR 0.43 (0.23 to 0.79)	0.006
Age (years: mean, SD)			67.5 (12.1)	58.9 (7.9)	Diff 8.6 (4.8 to 12.4)	<0.001
Preoperative PROMs (mean, SD)
OHS			20.9 (8.7)	19.6 (14.3)	Diff 1.3 (−1.7 to 4.3)	0.393
FJS			12.3 (15.5)	12.1 (11.3)	Diff 0.2 (−4.8 to 5.1)	0.947
EQ-5D			0.384 (0.312)	0.630 (0.196)	Diff 0.245 (0.14 to 0.346)	<0.001
EQ-VAS			68.3 (22.1)	77.5 (13.9)	Diff 9.2 (2.2 to 16.3)	0.011

Chi-square test, unpaired t-test, PROMs: patient-reported outcome measures.