Infertility rate
failure to become pregnant during 12 months of
unprotected intercourse while
between the ages of 18-44 and married or cohabiting
# women reporting infertility
# infertile + using birth control + surgically
sterilized + not sexually active
accepted definition used in North America
may underestimate the risk in women specifically trying
to become pregnant
on the other hand, women who conceive after 12 months
are included in the infertile
group