Table 2 Incidence of thromboembolic events with aromatase inhibitors and comparators

From: The effects of aromatase inhibitors on lipids and thrombosis

 

Thromboembolic events (% of patients)

 

Reference

Aromatase inhibitor

Comparator

P -value

ATAC (2002)

Anastrozole 64 (2.1%)

Tamoxifen 109 (3.5%)

=0.0006

Coombes et al (2004) (IES Trial)

Exemestane 30 (1.3%)

Tamoxifen 55 (2.4%)

=0.007

Dombernowsky et al (1998)

Letrozole (2.5 mg) 1 (0%)

Megestrol acetate 15 (7.9%)

Unknown

 

Letrozole (0.5 mg) 2 (1%)

  

Goss et al (2003) (MA-17 trial) (cardiovascular events)

Letrozole (2.5 mg) 88 (4.1%)

Placebo 77 (3.6%)

=0.4