Table 1a.

Patient characteristics according to cohort and time period

	Age		Sex		LOS		Type of fixation a
	Mean (SD)	p-value	Female %	p-value	Median (10–90%)	p-value	THA %	p-value	TKA %	p-value
2005–2007
Fast-track	69 (10)	< 0.001	58	0.02	4 (2–8)	< 0.001	19/59/22	< 0.001	91/0/9	< 0.001
National	69 (10)		60		6 (3–10)		32/47/22		76/10/14
2008–2009
Fast-track	68 (10)	< 0.001	58	0.1	3 (2–9)	< 0.001	10/65/25	< 0.001	89/3/8	< 0.001
National	69 (10)		59		4 (2–7)		19/66/15		81/6/13
2010–Sept. 2011
Fast-track	69 (10)	0.1	57	0.01	3 (2–5)	< 0.001	5/66/29	< 0.001	91/5/4	< 0.001
National	69 (9)		59		3 (2–7)		18/71/11		77/4/19

^a cemented/uncemented/hybrid