aReflects patient and
treatment characteristics of ART cycles performed in 2003 using
fresh nondonor eggs or embryos. b When fewer than 20 cycles are reported in an age category,
rates are shown as a fraction and confidence intervals are not
given. Calculating percentages from fractions may be misleading and
is not encouraged. cA
multiple-infant birth is counted as one live
birth. d Clinic-specific outcome
rates are unreliable for women older than 42 undergoing ART cycles
using fresh or frozen embryos with nondonor eggs. Readers are urged
to review national
outcomes for these age groups. e
All ages (including ages >42) are reported together because
previous data show that patient age does not materially affect
success with donor
eggs.