Table 1.

Collection of participant characteristics, outcome measures and explanatory variables

Variable	Patient group							Reference group
	Preoperatively	After surgery	During rehabilitation period	3 Month	6 Month	9 Month	1 Year	Single assessment
Height	x						x	x
Weight	x						x	x
Fat percentage	x						x	x
Educational level	x							x
Employment	x							x
Smoking	x							x
Alcohol consumption	x							x
Comorbidities	x							x
General health	x						x	x
Previous sports activities	x							x
Present sports activities	x			x	x	x	x	x
Expectations	x
Satisfaction					x		x
VAS pain	x			x	x	x	x	X
HAGOS	x			x	x	x	x	X
Biomechanical analysis	x						x	X
Muscle strength assessment	x						x	X
Objectively measured physical activity	x						x	X
Radiographic evaluation	x						x
Surgical parameters		x
Deviations from rehabilitation programme			x
Adverse events							x

HAGOS, Copenhagen Hip and Groin Outcome Score; VAS, Visual Analog Scale.