   Karen Miller, M.D.. Assistant Professor Obstetrics &
Gynecology     Take Home Points     1. To understand the
theoretical vs. use effectiveness of general categories of
contraceptives and contraceptives in general.    2. To
appreciate the most commonly used forms of contraception in the
U.S.    3. To understand the therapeutic problems uniquely
associated with the use of oral contraceptives (OCP).    4. To
understand initiation and management of oral contraceptives.
5. To gain some understanding of the benefits of oral
contraceptives.    Theoretical effectiveness is the maximum
effectiveness of that method--its effectiveness when used
without error, when used perfectly, and when used exactly
according to instruction.  Use effectiveness takes into account
all users--those who use the method without error and those who
are careless.  Breakthrough bleeding - non organic endometrial
bleeding during the use of oral contraceptives. It may be due to
estrogen or progestin deficiency or missing pills.  OCP - ora