Table 4.

Odds for venous thromboembolism stratified by Caprini score. CS: Caprini score, data are presented as odds ratios (95% CI), NS = no significant difference (p > 0.05)

	CS 7-8	CS 9-10	CS 11-12	CS 13-14	CS 15-16	CS 17-18	CS >18
CS 5-6	1.91(1.36-2.70)	3.95(2.76-5.65)	7.53(5.06-12.21)	6.71(4.30-10.48)	7.92(5.23-11.35)	20.49(13.70-30.65)	20.76(11.26-38.27)
P value	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
CS 7-8		2.06(1.75-2.44)	3.94(3.10-5.00)	3.51(2.57-4.79)	4.14(3.49-4.90)	10.71(8.36-13.72)	10.85(6.43-18.30)
P value		<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
CS 9-10			1.91(1.47-2.47)	1.70(1.23-2.36)	2.00(1.65-2.44)	5.19(3.98-6.76)	5.25(3.09-8.94)
P value			<0.001	<0.002	<0.001	<0.001	<0.001
CS 11-12				0.89(0.62-1.69)	1.05(0.81-1.36)	2.72(1.98-3.73)	2.76(1.58-4.82)
P value				0.54(NS)	0.705(NS)	<0.001	<0.001
CS 13-14					1.18(0.85-1.64)	3.05(2.10-4.44)	3.09(1.78-5.60)
P value					0.322(NS)	<0.001	<0.001
CS 15-16						2.59(1.98-3.38)	2.62(1.54-4.46)
P value						<0.001	<0.001
CS 17-18							1.01(0.58-1.78)
P value							0.964(NS)