Table 2.

Multivariate Regression Analysis for the Preoperative Pain at Rest/on Activity in Patients with Hip OA

	VAS for Pain at Rest				VAS for Pain on Activity
Predictors	β	95% Confidence Interval		P value	β	95% Confidence Interval		P value
		Lower	Upper			Lower	Upper
Sex	−0.299	−1.697	1.099	0.672	−0.599	−1.897	0.698	0.362
Age (years)	−0.008	−0.054	0.039	0.746	0.016	−0.026	0.059	0.451
BMI (kg/m2)	0.113	−0.001	0.226	0.049	0.127	0.022	0.231	0.018
Tönnis grade (2 or 3)	0.988	−0.224	2.201	0.109	0.222	−0.904	1.347	0.697
Pain duration (years)	0.050	−0.043	0.144	0.289	−0.023	−0.110	0.064	0.601
CSI score	0.067	0.025	0.110	0.002	0.036	−0.003	0.076	0.073

Notes: Age, BMI, pain duration, and CSI score were analyzed as continuous variables. Sex, hip OA grade by the Tönnis classification were analyzed as nominal scale variables. Statistically significant P-values (P<0.05) are indicated in bold.

Abbreviations: OA, osteoarthritis; BMI, body mass index; CSI, central sensitization inventory; β, standardized partial regression coefficient.