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Table 4 Predictors of OAT prescription at discharge in the whole sample, before, and after the guideline.

From: Implementing hospital guidelines improves warfarin use in non-valvular atrial fibrillation: a before-after study

 

Whole sample

Period:

   

2000

2004

 

OR*

(95% CI)

OR*

(95% CI)

OR*

(95% CI)

Risk of stroke:

      

   ▪ Moderate

1

-

1

-

1

-

   ▪ High

0.99

(0.55 – 1.76)

0.45

(0.19 – 1.03)

2.18

(0.96 – 4.94)

   ▪ Very high

1.48

(0.78 – 2.80)

0.58

(0.23 – 1.44)

3.92

(1.55 – 9.93)

Contraindications to OAT:

      

   ▪ None

1

-

1

-

1

-

   ▪ One or more

0.18

(0.13 – 0.27)

0.17

(0.09 – 0.34)

0.19

(0.11 – 0.30)

Age:

      

   ▪ < 75

1

-

1

-

1

-

   ▪ ≥ 75

0.30

(0.21 – 0.45)

0.35

(0.19 – 0.62)

0.26

(0.15 – 0.43)

AT at admission:

      

   ▪ No

1

-

1

-

1

-

   ▪ Yes

3.03

(2.08 – 4.43)

4.88

(2.74 – 8.69)

2.07

(1.23 – 3.47)

Period:

      

   ▪ 2000

1

-

-

-

-

-

   ▪ 2004

2.11

(1.47 – 3.04)

-

-

-

-

  1. (*)Odds ratios (OR) and 95% confidence intervals (95% CI) adjusted for all the variables listed in the table with logistic regression models.
  2. OAT, oral anticoagulant therapy; AT, antithrombotic therapy.