|
Colorado Center for Reproductive Medicine Statistics
|
|
2000 Statistics
|
|
Type of Cycle
|
Age of Woman
|
| Fresh Embryos from Nondonor Eggs |
<35
|
35-37
|
38-40
|
41-42e
|
|
Number of cycles
|
248
|
135
|
103
|
45
|
|
Percentage of cycles resulting in pregnancies c,d
|
67.7
|
55.6
|
45.6
|
35.6
|
|
Percentage of cycles resulting in live births c,d
|
60.9
|
47.4
|
34
|
24.4
|
|
Percentage of retrievals resulting in live births c,d
|
62.7
|
49.6
|
37.6
|
28.2
|
|
Percentage of transfers resulting in live births c,d
|
63.2
|
49.6
|
38
|
28.2
|
|
Percentage of cancellations c,d
|
2.8
|
4.4
|
9.7
|
13.3
|
|
Average number of embryos transferred
|
3
|
3.5
|
3.6
|
4.4
|
|
Percentages of pregnancies with twins c,d
|
42.9
|
33.3
|
21.3
|
4/16
|
|
Percentage of pregnancies with triplets c,d
|
11.9
|
6.7
|
14.9
|
2/16
|
|
Percentage of live births having multiple infants c,d
|
49
|
31.3
|
31.4
|
3/11
|
|
Frozen Embryos from Nondonor Eggs
|
|
Number of transfers
|
53
|
27
|
26
|
12
|
|
Percentage of Transfers resulting in live births c,d
|
41.5
|
25.9
|
38.5
|
5/12
|
|
Average number of embryos transferred
|
3.6
|
3.1
|
3.4
|
3.3
|
|
All Ages Combined
|
| Donor Eggs |
Fresh Embryos
|
Frozen Embryos
|
| Number of Transfers |
175
|
52
|
|
Percentage of Transfers resulting in live births c,d
|
67.4
|
36.5
|
|
Average number of embryos transferred
|
2.7
|
3.3
|
a) Clinic-level statistics do not include gestational carrier cycles because the number of such cycles is very small.
b) Reflects patient and treatment characteristics of ART cycles performed in 2000 using fresh, nondonor eggs or embryos.
c) When fewer than 20 cycles are reported in an age category, rates are shown as a fraction. Calculating percentages from fractions may be misleading and is not encouraged.
d) A multiple-infant birth is counted as one live birth.
e) 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.
f) All ages (including ages >42) are reported together because previous data show that patient age does not materially affect success with donor eggs.