European project on osteoarthritis: design of a six-cohort study on the personal and societal burden of osteoarthritis in an older European population

Table 3 Prevalence rate of self-reported and clinical OA and joint replacements by country (weighted)

	All countries	Germany	Italy	Netherlands	Spain	Sweden	UK	p-value
Self-reported OA (%)
Knee	34.1	28.4	44.2	26.2	45.0	34.9	22.0	<.0001
Hip	21.8	7.0	35.5	19.1	24.1	27.3	11.6	<.0001
Hand	33.8	28.8	44.2	29.4	38.0	42.3	13.1	<.0001
Any knee, hip or hand	52.8	45.6	68.8	44.3	56.8	60.2	35.8	<.0001
Anywhere in the body	58.8	51.7	79.4	48.9	61.3	65.7	39.2	<.0001
Clinical OA (%)
Knee	20.2	11.0	28.8	18.2	24.1	20.0	15.9	<.0001
Hip	6.1	0.8	13.8	6.7	4.4	5.0	4.7	<.0001
Hand	17.1	13.3	24.1	11.3	19.3	19.4	14.7	<.0001
Any knee, hip or hand	31.7	21.9	43.9	25.9	35.4	33.3	27.6	<.0001
Joint replacements (%)
Knee replacements	3.9	3.5	3.2	2.9	4.9	3.3	6.5	ns
Hip replacements	6.4	7.7	6.7	9.2	2.4	6.5	5.7	<.001
Hand/fingers replacements	0.1	0	0	0.4	0.1	0.1	0	ns
Any joint replacements	12.3	12.1	10.6	15.2	10.2	11.6	14.2	ns

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