Finally, The Most Recently Developed Measure Is The Cumulative Success Rate. This Looks At Success Rates Achieved Over A Number Of Treatment Cycles. Some Experts Will Further Argue That Prospects Of Success Tail Off After Four Or Five Although This Is Hotly Disputed. Looking At Cumulative Success Rates Either Of Conceptions Or Live Births Is A Realistic Approach, As Most People Start Ivf Expecting To Have More Than One Cycle Of Treatment. However For Those Who Find That One Round Is Enough Cumulative Figures Are Not Very Helpful.
So What Does All This Add Up To ? On Average, For All Women In Britain All Ages And All Conditions Ivf Produces A Pregnancy Rate Of About 17 Per Cent Per Treatment Cycle, And 23 Per Cent Per Embryo Transfer And A Live Birth Of About 13 Per Cent Per Treatment Cycle And 17 Per Cent Per Embryo Transfer. In Terms Of Cumulative Success Rates It Means That Over Five Treatment Cycles About Half Of All Women Will Get Pregnant, And A Third To A Half Will Have Babies.
Behind These Broad Brush Figures There Are More Detailed Ones That Will Help You Assess Your Chances. The Human Fertilization And Embryology Authority, The Regulating Authority For The New Reproductive Technologies, Publishes Some General Figures For Success Rates For Different Clinics. The Figures In The Tables Opposite Are For Pregnancy And Live Birth Rates Per Embryo Transfer.
The Authority’s 1994 Report Shows The Change In Success Rates Over The Years, With The Recent Dip Reflecting The Fact That The Average Age Of Women Receiving Treatment Increased By A Year. It Is Important To Note That These Figures Show Pregnancy And 