UNDERSTANDING YOUR CHANCES TO ACHIEVE PREGNANCY


When you plan for the best time to try for pregnancy, you need to consider how big you want your family to be, and whether IVF would be an option to achieve your goals. The more children you want, the earliest you need to start trying. If you keep delaying the start, you might fail to conceive a child. And for those who conceived, some might experience difficulties while trying for child number 2.

Some studies have been published highlighting the chances infront of parents-to-be depending on age and the possibility of using assisted reproductive treatments.

Again, it is worth noting that the starting age correlates with the number of children you want and the way you would like to conceive. The figures below will help you to understand your chances.

  • Chances to achieve natural pregnancy according to the starting age:

    • If you want 3 children:
      • ~23 years old – 90% possibility of having 3 children;
      • ~31 years old – 75% possibility of having 3 children;
      • ~35 years old – 50% possibility of having 3 children;

    • If you want 2 children:
      • ~27 years old – 90% possibility of having 2 children;
      • ~34 years old – 75% possibility of having 2 children;
      • ~38 years old – 50% possibility of having 2 children;

    • If you want 1 child:
      • ~32 years old – 90% possibility of having 1 child;
      • ~37 years old – 75% possibility of having 1 child;
      • ~41 years old – 50% possibility of having 1 child;

  • Chances to achieve pregnancy via IVF according to the starting age:

    • If you want 3 children:
      • ~28 years old – 90% possibility of having 3 children;
      • ~33 years old – 75% possibility of having 3 children;
      • ~36 years old – 50% possibility of having 3 children;

    • If you want 2 children:
      • ~31 years old – 90% possibility of having 2 children;
      • ~35 years old – 75% possibility of having 2 children;
      • ~39 years old – 50% possibility of having 2 children;

    • If you want 1 child:
      • ~35 years old – 90% possibility of having 1 child;
      • ~39 years old – 75% possibility of having 1 child;
      • ~42 years old – 50% possibility of having 1 child;

    Source: Habbema, J. et al (2015) Realizing a desired family size: when should couple s start? Human Reproduction. 30 (9), 2215-2221.

  • Chances to achieve pregnancy from IVF (Egg Freezing) with different age groups at freezing age:

    • <29 years’ old
      • Survival Rate – 94.5%
      • Clinical Pregnancy Rate/cycle – 66.6%
      • Ongoing Pregnancy Rate/cycle – 66.6%
      • Live Birth – 100%

    • 30 - 34 years’ old
      • Survival Rate – 96.1%
      • Clinical Pregnancy Rate/cycle – 60.9%
      • Ongoing Pregnancy Rate/cycle – 56.5%
      • Live Birth – 45%

    • 35 – 39 years’ old
      • Survival Rate – 81.8%
      • Clinical Pregnancy Rate/cycle – 37.8%
      • Ongoing Pregnancy Rate/cycle – 21.3%
      • Live Birth – 28.5%

    • >41 years’ old
      • Survival Rate – 85.3%
      • Clinical Pregnancy Rate/cycle – 9.8%
      • Ongoing Pregnancy Rate/cycle – 6.3%
      • Live Birth – 3.7%

    • These figures explain the beneficial of eggs freezing at an earlier age to avoid missing the opportunity of getting its benefit. Hence, there is an importance of fertility awareness and information about the chances.

      Source: Cobo, A. et al (2016) Oocyte vitrification as an efficient option for elective fertility preservation. Fertility & Sterility, American Society for Reproductive Medicine. 105 (3), 755 – 764.

  • Risk of miscarriage at different age groups

    The rate of miscarriage after an IVF cycle is known to be approximately 15% which is similar to the miscarriage rate following natural conception. Obviously, it is higher for older women regardless the conception method.

    For example, a study performed in the UK has analysed the miscarriage rate of 124,351 pregnancies following IVF (Data from 1991 to 2008) and the results were approximately the following:

    • <34 years’ old ~ 18.4%
    • 35 – 37 years’ old ~ 23.1%
    • 38 – 39 years’ old ~ 29.1%
    • 40 – 42 years’ old ~ 40.6%
    • 43 – 44 years’ old ~ 57.3%
    • >45 years’ old ~ 65.6%

    Source: Sunkara, S. et al. (2014) Association between response to ovarian stimulation and miscarriage following IVF: an analysis of 124351 IVF pregnancies. Human Reproduction. 29 (6), 1218-1224.

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