Association of knee pain and different definitions of knee osteoarthritis with health-related quality of life: a population-based cohort study in southern Sweden

Table 4 The effects of knee osteoarthritis (OA) on health-related quality of life: results from regression analysis

	UK EQ-5D-3L index score	Swedish EQ-5D-3L index score	Pain (KOOS)	Symptoms (KOOS)	ADL (KOOS)	QoL (KOOS)
Full sample^a
Reference group	0.00 (ref)
Knee pain without knee OA	−0.15***	−0.06***	−22.69***	−8.78***	−19.67***	−27.41***
Knee pain with knee OA	−0.19***	−0.08***	−35.14***	−16.92***	−31.94***	−43.48***
Radiographic knee OA without pain	−0.09***	−0.03**	−10.04***	−4.27***	−8.72***	−18.47***
Participants with knee OA^a
Radiographic knee OA	0.00 (ref)
Clinical knee OA	−0.08***	−0.04***	−17.92***	−10.91***	−17.40***	−18.40***
Clinical and radiographic knee OA	−0.10**	−0.05***	−23.79***	−14.08***	−22.50***	−24.42***

ADL function in daily living, QoL Knee-related quality of life
***,** p < 0.001, and p < 0.01 significance level compared to the reference group
^aBoth models were additionally adjusted for age, sex, body mass index, comorbidity, years of education, employment, and smoking

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