Table 1

Description of the included assessment over 5 years

		Inclusion	1 year	2 years	3 years	4 years	5 years
Clinical examination		X		X			X
Radiographic examination	Knees	X	X	X	X	X	X
Radiographic examination	Hands			X			X
Blood samples		X	X	X	X	X	X
Metabolic measures		X		X			X
PPT		X		X			X
Tests of physical function		X		X			X
Daily physical activity types		X		X
KOOS		X	X	X	X	X	X
Quick DASH		X	X	X	X	X	X
Pain questions		X	X	X	X	X	X
HADS		X	X	X	X	X	X
EQ5D-3L		X	X	X	X	X	X
SF-36		X	X	X	X	X	X
Lifestyle habits		X	X	X	X	X	X
HLS-EU-Q16				X	X	X	X

DASH, Disabilities of the Arm, Shoulder and Hand Questionnaire; EQ5D-3L, EuroQol five-dimension, three-level questionnaire; HADS, Hospital Anxiety and Depression Scale; HLS-EU-Q16, Psychometric Assessment of the European Health Literacy; KOOS, Knee injury and Osteoarthritis Outcome Score; PPT, pain pressure threshold; SF-36, 36-item Short Form survey.