Table 5. Known-groups validity of the Turkish version of HOOS by osteoarthritis severity.

	Tönnis Grade 2 (n=19)		Tönnis Grade 3 (n=36)
	Median	IQR	Median	IQR	p
Symptoms	45	30-60	32.5	20-48.8	0.278
Pain	37.5	20-42.5	25	15-35	0.060
ADL	36.8	22.1-50	27.2	11.8-35.3	0.006*
Sport/Rec	25	12.5- 31.3	6.3	0-25	0.010*
QoL	12.5	6.3-31.3	12.5	6.3-31.3	0.794
Total	31.1	20.4-36.3	22.6	13.2-30.7	0.035*
HOOS: Hip disability and Osteoarthritis Outcome Score; IQR: Interquartile range; ADL: Activities of daily living; Sport/Rec: Sport and recreation; QoL: Quality of life; * p<0.05.