Table 1 Patient characteristics at the index date and mortality in the following 6 months

Number of patients

Mean age at index date ± SD

   Number of patients 66–74

   Number of patients 75–84

   Number of patients ≥ 85

Risk factors

   Mammography in years 2 or 3 prior to the index date

   History of diagnostic and therapeutic breast procedures in the 3 prior to the index date

   Benign neoplasm of the breast in the 3 years prior to the index date

   Other breast disease in the 3 years prior to the index date

   Estrogen replacement therapy in the year prior to the index date

   Combined estrogen/progesterone therapy in the year prior to the index date

Visit to a gynecologist in the year prior to the index date

Exposure to the drugs of interest (one or more prescriptions in the year prior to the index date)

   Ns-NSAID/COX-2 inhibitors

Ns-NSAIDs

COX-2 inhibitors

Rofecoxib

Celecoxib

   Aspirin

   Acetaminophen

   Not exposed*