Success Rates

Note; per SART guidelines; Clinical or ongoing pregnancy is defined as evidence of pregnancy by clinical or ultrasound parameters (ultrasound visualization of a gestational sac).  It includes ectopic pregnancy. Multiple gestational sacs in one patient are counted as one clinical pregnancy.

A comparison of clinic success rates may not be meaningful because patient medical characteristics, treatment approaches and entrance criteria for ART may vary from clinic to clinic.

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, 2008 for inclusion in its national report on 2006 IVF statistics. This information will be published by SART and will be posted on the CDC website in late 2008. All information is current as of 3/31/2007.
Research cycles are included in SART data, not in CDC data, thus you will notice a difference in the SART and CDC data reports.

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 for inclusion in its national report on 2005 IVF statistics. This information will be published by SART and will be posted on the CDC website in late 2007. All information is current as of 3/12/2006.

Research cycles are included in SART data, not in CDC data, thus you will notice a difference in the SART and CDC data reports.

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, 2006 for inclusion in its national report on 2004 IVF statistics. This information will be published by SART and will be posted on the CDC website in late 2006.  All information is current as of 3/22/2006.

Research cycles are included in SART data, not in CDC data, thus you will notice a difference in the SART and CDC data reports.

a) Reflects patient and treatment characteristics of ART cycles performed in 2003 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 December, 2004 for inclusion in its national report on 2003 IVF statistics. This information was published by SART and posted on the CDC website in late 2005. All information is current as of 1/4/2006.

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 December, 2003 for inclusion in its national report on 2002 IVF statistics. This information was published by SART and posted on the CDC website in early 2005.

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) on December 13, 2002 for inclusion in its national report on 2001 IVF statistics. This information will be published by SART and posted on the CDC website in late 2003.

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.