Colorado Center for Reproductive Medicine
2005 Statistics
|
Type of Cycle |
Age of Woman |
|
Fresh Embryos from Non-donor Eggs |
<35 |
35-37 |
38-40 |
41-42 |
>42 |
|
Number of cycles |
253 |
181 |
123 |
66 |
29 |
|
Percentage of cycles resulting in pregnancies c |
70.4 |
59.1 |
51.2 |
43.9 |
10.3 |
|
Percentage of cycles resulting in live births b,c |
60.5 |
46.4 |
40.7 |
33.3 |
6.9 |
|
(Reliability Range) |
(54.4-66.5) |
(39.1-53.7) |
(32.0-49.3) |
(22.0-44.7) |
(0-16.1) |
|
Percentage of retrievals resulting in live births b,c |
61.2 |
47.7 |
41.7 |
34.9 |
8.0 |
|
Percentage of transfers resulting in live births b,c |
61.7 |
48.6 |
42.0 |
36.1 |
9.1 |
|
Percentage of cycles with elective single embryo transfer |
3.6 |
5.8 |
1.7 |
0 |
0 |
|
Percentage of cancellations c |
1.2 |
2.8 |
2.4 |
4.5 |
13.8 |
|
Implantation rate |
46.0 |
34.4 |
23.8 |
18.5 |
9.1 |
|
Average number of embryos transferred |
2.2 |
2.4 |
3.0 |
3.5 |
3.5 |
|
Percentages of live births with twins c |
34.8 |
29.9 |
25.4 |
13.8 |
0/3 |
|
Percentage of live births with triplets or more c |
6.2 |
5.6 |
7.9 |
10.3 |
2/3 |
Frozen Embryos from Non-donor Eggs
| |
Age of Woman |
|
<35 |
35-37 |
38-40 |
41-42 |
>42 |
|
Number of transfers |
66 |
49 |
30 |
10 |
6 |
|
Percentage of cycles resulting in live births b,c |
57.6 |
42.9 |
43.3 |
2/10 |
1/6 |
|
Average number of embryos transferred |
2.5 |
2.4 |
2.3 |
2.4 |
1.8 |
Donor Eggs
| |
All Ages Combinede |
|
Fresh Embryos |
Frozen Embryos |
|
Number of transfers |
165 |
60 |
|
Percentage of cycles resulting in live births b,c |
70.3 |
51.7 |
|
Average number of embryos transferred |
2.1 |
2.5 |
a) Reflects patient and treatment characteristics of ART cycles performed in 2005 using fresh, nondonor eggs or embryos
b) Pregnancies resulting in one or more children born alive (i.e., a multiple-infant birth is counted as one live birth).
c) When fewer than 20 cycles using fresh, non-donor eggs or embryos are
reported in any one category, live birth rates are shown as fractions,
and reliability ranges are not given. Calculation of percentage based
on a fraction may be misleading and is not encouraged.
d) All ages (including age >42) are reported together because
previous data show that patient age does not materially affect success
with donor eggs.
e) For patients older than 42 undergoing ART cycles using fresh,
non-donor eggs or embryos, clinic-specific outcome rates are
unreliable. Patients are urged to review national outcomes for these
age groups.
The above information was submitted to SART (Society for Reproductive Technology) in January 2007 and has been included in its 2005 national report as well as the Centers for Disease Control and Prevention (CDC) 2005 ART statistics.
Research cycles are included in SART data, not in CDC data, thus
you will notice a difference in the SART and CDC data reports.