1. Influence of patient age on the growth and transfer of blastocyst-stage embryos 
Bruce S Shapiro, M.D., Kevin S Richter, Ph.D., Dee C Harris, M.T., Said T Daneshmand, M.D. 
Fertility and Sterility 
Volume 77, Issue 4, Pages (April 2002)
DOI: /S (01)

2. FIGURE 1
Scatter plots of the percentages of stimulations leading to oocyte retrieval (A), fertilizations leading to expanded blastocyst formation and ET (B), pregnancy rate per stimulation (C), and pregnancy rate per transfer (D). Data points are percentages for patients grouped in 1-year intervals plotted against the mean age of patients in each group. Point size is proportional to the number of patients represented. Trend lines were determined by logistic regression analysis of individual patient data.
Shapiro. Age and blastocyst growth and transfer. Fertil Steril 2002.
Fertility and Sterility  , DOI: ( /S (01) )

3. FIGURE 2
Scatterplots of IVF cycle statistics according to patient age, including trend lines determined by linear regression analysis.
Shapiro. Age and blastocyst growth and transfer. Fertil Steril 2002.
Fertility and Sterility  , DOI: ( /S (01) )