Table 3. Impact of cumulative risk factors and odds of developing Acute VTE after Hip and Knee Arthroplasty.

Risk Factor count		n	%a	OR	95% CI	p
	TJA as independent risk factor	1,036	0.5%
	TJA + 1	1,141	1.4%	0.61	0.58–0.64	<0.001
	TJA + 2	3,250	1.6%	0.81	0.78–0.84	<0.001
	TJA + 3	3,970	1.8%	1.04	1.01–1.08	0.01
	TJA + 4	3,066	2.1%	1.36	1.31–1.41	<0.001
	TJA + 5	1,569	2.4%	1.53	1.45–1.62	<0.001
	TJA + 6	612	2.7%	1.78	1.64–1.93	<0.001
	TJA + 7	154	3.0%	1.92	1.63–2.26	<0.001
	TJA + 8	29	4.5%	2.98	2.00–4.24	<0.001

^aThe percentage is based on the number of patients with risk factors developing an acute VTE after surgery.