11.   In a new study, Australian doctors compared a standard combination of estrogen and progestin with one of a relatively new class of cholesterol-lowering drugs called statins.

12.   The doctors then compared the frequency of return office visits within a month of the initial visit.

13.   The doctors compared those patients with people treated the previous year.

14.   The project includes a control group so doctors can compare health care costs and benefits between the two groups, Weinstock said.