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 3

Change in the EQ-5D score according to patient demographics, preoperative functional scores, and type of total hip arthroplasty (robotic arm-assisted versus non-robotic arm-assisted).

Demographic		Descriptive	Correlation/difference (95% CI)	value
Sex (n, % of group)		Male	Reference
		Female	Diff 0.045 (−0.012 to 0.101)	0.121
Age			Corr 0.007 (−0.077 to 0.090)	0.873
Preoperative PROMs
OHS		Corr −0.345 (−0.416 to −0.269)	<0.001
FJS		Corr −0.247 (−0.324 to −0.167)	<0.001
EQ-5D		Corr −0.679 (−0.722 to −0.631)	<0.001
EQ-VAS		Corr −0.155 (−0.235 to 0.072)	<0.001
rTHA (n, % of group)		No	Reference
		Yes	Diff −0.095 (−0.200 to 0.11)	0.078

Chi-square test, Pearson’s correlation, PROMs: patient-reported outcome measures.