Which disease-related factors influence patients’ and physicians’ willingness to consider joint replacement in hip and knee OA? Results of a questionnaire survey linked to claims data

Table 6 Results of logistic regression models – factors associated with having discussed TJR

Variable	Reference	OR hip	95% CI hip	p-Value hip	OR knee	95% CI knee	p-Value knee
Age, years	per 10 years increase	0.9	(0.72; 1.12)	0.35	1.23	(1.07; 1.42)	< 0.01
Sex female	Male	0.87	(0.54; 1.41)	0.58	0.69	(0.51; 0.94)	0.02
BMI > =35 kg/m^2a	< 35 kg/m²	0.45	(0.18; 1.11)	0.08	1.21	(0.75; 1.95)	0.44
Symptom duration, years^b	per 5 years increase	1	(0.9; 1.12)	0.96	1.08	(1; 1.15)	0.04
Deterioration of symptoms in last 2 years^a	no change/improvement	1.1	(0.66; 1.84)	0.72	2.02	(1.44; 2.84)	< 0.01
WOMAC^a	per 10 units increase	1.04	(0.91; 1.18)	0.57	1.29	(1.17; 1.42)	< 0.01
Any impact on personal life^a	No impact	2.65	(1.29; 5.46)	0.01	2.32	(1.5; 3.6)	< 0.01
WHO-5^a	per 10 units increase	1.03	(0.93; 1.15)	0.59	0.91	(0.85; 0.97)	0.01
Orthopaedist is treating^a	Other physician is treating	1.54	(0.9; 2.62)	0.11	1.58	(1.1; 2.28)	0.01
NSAID prescription^a	No	1.39	(0.84; 2.3)	0.20	1.3	(0.93; 1.82)	0.13
Opioid prescription^a	No	0.99	(0.46; 2.15)	0.98	1.64	(0.99; 2.7)	0.05
Physical therapy prescription^a	No	0.99	(0.6; 1.64)	0.97	1.08	(0.77; 1.52)	0.66
Already having one artificial joint	No	4.19	(2.1; 8.33)	< 0.01	3.3	(2.06; 5.28)	< 0.01

^aadjusted for age, sex, symptom duration
^badjusted for age, sex
Results of 12 multiple logistic regression models with “TJR was discussed” as independent variable. Bold values indicate statistically significant associations

ISSN: 1471-2474