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Table 3 Warfarin and effect of confounding

From: Mortality among head trauma patients taking preinjury antithrombotic agents: a retrospective cohort analysis from a Level 1 trauma centre

 

Dead

Dead

Alive

Alive

   
 

Warf

No warf

Warf

No warf

OR (95 %)

OR MH (95 %)

Breslow-Day Inter-action

Crude

15

41

38

240

2.311 (1.167, 4.576)

  

T-RTS

     

X

0.002

12

8

4

24

161

13.417 (3.751, 47.992)

  

11 or less

7

37

13

79

1.150 (0.424, 3.120)

  
  1. Warf warfarin, OR odds ratio, MH Mantel Haenzel