This calculator is based on results from a multicentre retrospective cohort study including 14213 patients undergoing their first IVF/ICSI cycle with autologous oocytes and subsequent embryo transfers. A multivariable logistic regression was performed to estimate Cumulative Live Birth Rates and allow for an interpatient comparison.

If you start in vitro fertilization immediately...


BMI

22

kg/m2

Age

34.75

years

Estimated CLBR

53,73%


If you delay in vitro fertilization for 3 months...

...and keep the same weight
Estimated CLBR*

53,08%

...and reduce 1 unit of BMI
Estimated CLBR*

53,49%

  • Weight goal between 46.1 kg and 48.4 kg
  • Weight reduction between 1.6 kg and 3.9 kg
...and reduce 2 units of BMI
Estimated CLBR*

53,89%

  • Weight goal between 43.9 kg and 46.1 kg
  • Weight reduction between 3.9 kg and 6.1 kg
...and reduce 3 units of BMI
Estimated CLBR*

54,30%

  • Weight goal between 41.6 kg and 43.9 kg
  • Weight reduction between 6.1 kg and 8.4 kg
...and reduce 4 units of BMI
Estimated CLBR*

54,70%

  • Weight goal between 39.4 kg and 41.6 kg
  • Weight reduction between 8.4 kg and 10.6 kg

*In case there is a male partner, the decrease in Cumulative Live Birth Rate per year, due to male ageing, is estimated to be -0.91% and should be accounted for.