Table 2.

The 15D scores of the total knee arthroplasty patients in the age and gender groups compared to the standardised control population.

	Age groups (years)
	30–44		45–54		55–64		65–74		>75		All
	Mean (n)	p value	Mean (n)	p value	Mean (n)	p value	Mean (n)	p value	Mean (n)	p value	Mean (n)	p value
Gender
Male
Baseline	0.842 (1)	n/a	0.851 (22)	<0.001	0.858 (87)	<0.001	0.851 (117)	<0.001	0.839 (53)	0.456	0.851 (280)	<0.001
12-month F-U	0.806 (1)	n/a	0.890 (22)	0.019	0.904 (87)	0.114	0.877 (117)	0.020	0.839 (53)	0.565	0.879 (280)	0.005
Control population	0.950 (1)		0.940 (22)		0.920 (87)		0.900 (117)		0.830 (53)		0.896 (280)
Female
Baseline	0.815 (1)	n/a	0.842 (36)	<0.001	0.844 (130)	<0.001	0.847 (158)	<0.001	0.836 (126)	0.609	0.842 (451)	<0.001
12-month F-U	1.00 (1)	n/a	0.889 (36)	0.013	0.894 (130)	<0.001	0.881 (158)	0.017	0.855 (126)	0.079	0.878 (451)	0.003
Control population	0.940 (1)		0.930 (36)		0.920 (130)		0.900 (158)		0.840 (126)		0.892 (451)

F-U: follow-up; n/a: not applicable.