Table 6 Incidence of PE in the four groups based on risk level.

From: Different combination strategies for prophylaxis of venous thromboembolism in patients: A prospective multicenter randomized controlled study

Group Risk level

A

B

C

D

Overall

Moderate

2/102 (2.0%)

1/113 (0.9%)

0/95 (0%)

0/101 (0%)

3/411 (0.73%)

High

1/35 (2.9%)

0/31 (0%)

1/34 (2.9%)

1/33 (3.0%)

3/133 (0.23%)#

Very high

4/22 (18.2%)

0/13 (0%)

2/24 (8.3%)

0/22 (0%)**

6/81 (7.4%)#

Overall

7/159 (4.4%)

1/157 (0.64%)*

3/153 (2.0%)

1/156 (0.64%)*

12/625 (1.9%)#

  1. Note: *P < 0.05 vs. group A; #P < 0.01 among the three risk groups; **P < 0.05 vs. group A.
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