Pregnancy Success Rates -2020-

Pregnancy rate of IVF

A frozen blastocyst transfer is a procedure in which a fertilized egg is cultured for five to six days until it reaches a state called a blastocyst, frozen and preserved, and then transferred to the uterus in another cycle. There are four stages of embryo transfer:
1) Fresh early embryo transfer, 2) Fresh blastocyst transfer, 3) Frozen early embryo transfer, and 4) Frozen blastocyst transfer.
Of these, (4) Frozen Blastocyst Transfer has the highest pregnancy rate.

Age The pregnancy rate when one embryo transfer is performed The pregnancy rate when two embryo transfers are performed
~31 years old 53.5% 66.7%
32~34 years old 63.6% 64.3%
35~37 years old 51.8% 69.0%
38~40 years old 42.6% 38.2%
41~43 years old 32.6% 41.2%
Over 44 years old 31.0% 37.5%

There are three methods of embryo transfer: "hormone replacement," "natural method," and “minimum stimulus”.
Here are the pregnancy rates of each of these methods.
This data includes both single and double transplants.

Age Hormone replacement Completely natural method・Minimum stimulus
~34 years old 62.5% 30.0%
35~40 years old 49.1% 22.2%
Over 41 years old 32.7% 30.8%

This is the probability that a fertilized egg has developed into a blastocyst after five to six days of incubation.
The pregnancy rate for embryos that develop into blastocysts is high, so it is important to culture as many fertilized eggs as possible into blastocysts.
The blastocyst achievement rate is a guideline for evaluating a fertility treatment facility.

Age Blastocyst Achievement Rate Good Blastocyst Achievement Rate
~31 years old 68.5% 53.4%
32~34 years old 73.7% 57.0%
35~37 years old 64.5% 49.8%
38~40 years old 61.1% 44.0%
41~43 years old 59.7% 37.7%
Over 44years old 43.1% 20.7%

In the case of time-lapse culture, the blastocyst achievement rate is improved by an average of 11% over the above.
*Good embryos of 4BC or more

The number of egg collections and embryo transfers per year.

Number of egg collections 1327/year
Number of embryo transfers 1348/year

Pregnancy rate of Timed intercourse
and Artificial insemination

Timed intercourse is a method that predicts a woman's ovulation date in advance and guides to the day of sexual intercourse when most likely to conceive.

Pregnancy rate
~31 years old Statistical processing is not possible because the total number is unknown.
32~34 years old
35~38 years old
Over 39 years old
Number of cycles
Average cycles to pregnancy 2.5cycles
Minimum number of cycles to pregnancy 1cycle
Maximum number of cycles to pregnancy 15cycles
Average age of implementers Unknown
Average age of pregnancies 33.3years old
Minimum age of pregnancies 24years old
Maximum age of pregnancies 44years old
Multiple birth rates
Multiple birth rates Unknown

Artificial insemination is a method of injecting the husband's sperm into the uterus at the most fertile time by predicting the woman's ovulation date in advance.
In the case of the Timed intercourse, the sperm is ejaculated vaginally through sexual intercourse and enters the uterus by spermself, but artificial insemination can shortcut that part of the process.

Pregnancy rate
Age 1~3cycles 4~6cycles Average
~31years old 6.3% 8.0% 6.8%
32~34years old 4.9% 5.9% 5.0%
35~38years old 8.1% 7.1% 7.8%
Over 39years old 10.0% 3.2% 7.6%
Number of cycles
Average time to pregnancy 3cycles
Minimum number of cycles to pregnancy 1cycle
Maximum number of cycles to pregnancy 16cycles
Average age of implementers 35.3years old
Average age of pregnancies 34.9years old
Minimum age of pregnancies 27years old
Maximum age of pregnancies 42years old
Multiple birth rates
Multiple birth rates 0.0%

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