Predictors of pain and use of pain medications following primary Total Hip Arthroplasty (THA): 5,707 THAs at 2-years and 3,289 THAs at 5-years

Table 2 Multivariable* Predictors of Moderate-severe Pain

	Multivariable-adjusted 2-year			Multivariable-adjusted 5-year
	Odds Ratio	(95% Confidence Interval)	p-value	Odds Ratio	(95% Confidence Interval)	p-value
Female Gender (Ref, Male)	1.1	(0.9, 1.4)	0.30	1.2	(0.9, 1.5)	0.18
Age (Ref, ≤ 60 yrs)
>60-70 yrs	0.7	(0.6, 1.0)	0.06	0.8	(0.6, 1.1)	0.17
>70-80 yrs	1.1	(0.8, 1.6)	0.45	0.8	(0.6, 1.2)	0.32
>80 yrs	1.5	(1.0, 2.3)	0.07	0.6	(0.3, 1.1)	0.11
BMI (Ref, <25 kg/m²)
25-29.9	1.0	(0.7, 1.3)	1.00	1.5	(1.1, 2.1)	0.02
30-34.9	1.3	(1.0, 1.8)	0.07	1.8	(1.2, 2.6)	<0.01
35-39.9	1.8	(1.2, 2.6)	<0.01	1.9	(1.2, 3.1)	0.01
≥ 40	1.7	(1.0, 2.9)	0.04	3.1	(1.7, 5.7)	<0.01
Deyo-Charlson index ( 5-point change)	1.0	(0.8, 1.3)	0.98	0.9	(0.7, 1.3)	0.75
Anxiety (Ref, no)	0.9	(0.5, 1.4)	0.58	1.1	(0.6, 2.1)	0.76
Depression (Ref, no)	2.1	(1.4, 3.0)	<0.01	1.3	(0.8, 2.2)	0.30

*Adjusted for ASA score, distance from the medical center, income and the operative diagnosis, in addition to the above variables
Regression: n/N = 409/5,154 at 2-yr FU; n/N = 318/2,929 at 5-yr FU; Numbers in Bold indicate significant Odds ratios and p-values

ISSN: 1471-2474