The study included almost 20,000 postmenopausal women who were at high risk for breast cancer, based on personal and family medical histories.
It enrolled 2,437 postmenopausal women with early stage breast cancer.
The research looked at 74,000 postmenopausal women between the ages of 50 and 79.
Researchers studied 22,507 postmenopausal women, following them for 10 years.
The report was based on a study of 1,118 postmenopausal woman over as many as 18 years.
Results Data in the present study were available for 182 pre-menopausal and 214 postmenopausal women.
That study, of 351 postmenopausal women, had begun with high hopes in the mid-1990's.
All postmenopausal women below age 65 who have risk factors for osteoporosis.
The study included 153,840 postmenopausal women with an average age at enrollment of 63.
As expected, most of the affected patients, 81%, were postmenopausal women.