Current hormone replacement medication use is based on self-report. Female participants are first asked if they have ever taken medication for hormone replacement. Those who respond "yes" are asked to identify the form of medication (e.g., pill, patch) and to report age at first use. Participants who provide an age are asked about current use (yes = 1, no = 2):

1. Did you ever take any type of estrogen hormonal medication, for example Premarin Ogen, or Estrace, or progesterone hormonal medication, for example Provera?
2. Were these estrogen or progesterone hormones in the form of a pill, injection, vaginal cream or suppository, or skin patch?
3. How old were you when you first took this/these medications?
4. Are you currently taking this/these medication(s)?