Table 5.

The relationship of gender, age, and percentage of patients to hip disease of primary THR, in Taiwan, Norwegian and Swedish.

	Diagnosis	Percentage (%)	Men (%)	Mean age (range) (yrs)
Taiwan (1996–2004)	FNF	1.5	48	70
	AVN	46.9	79	50
	OA	41.6	43	60
Norwegian (1987–1999)	FNF	13	21	73
	AVN	0.8	51	57
	OA	69	32	70
Swedish (1992–2002)	FNF	11.4	-	76
	AVN	2.9	-	70
	OA	74	-	69