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Follicle recruitment determines IVF productivity rate via the number of embryos frozen and subsequent transfers James D. Stanger, John L. Yovich Reproductive BioMedicine Online Volume 27, Issue 3, Pages (September 2013) DOI: /j.rbmo Copyright © 2013 Reproductive Healthcare Ltd. Terms and Conditions
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Figure 1 Live birth rates per fresh (●) and frozen embryo transfer (■) and per egg collection (▴) as a function of the number of oocytes recovered. Reproductive BioMedicine Online , DOI: ( /j.rbmo ) Copyright © 2013 Reproductive Healthcare Ltd. Terms and Conditions
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Figure 2 Live birth rate per egg collection by age group (♦, <35; ■, 35–39; ▴, ⩾40years) is shown as a function of the number of oocytes recovered. Reproductive BioMedicine Online , DOI: ( /j.rbmo ) Copyright © 2013 Reproductive Healthcare Ltd. Terms and Conditions
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Figure 3 Influence of oocyte numbers on the contribution of frozen embryo transfers to the overall live birth rate as a function of the number of oocytes recovered in the original collection cycle. When 19–20 oocytes were recovered, more than 60% of all live births were derived from frozen embryo transfers. The insert graph shows the mean number of frozen embryo transfers per collection as a function of oocytes recovered. On average, there was 0.8 frozen embryo transfers per collection of 9–15 oocytes. Reproductive BioMedicine Online , DOI: ( /j.rbmo ) Copyright © 2013 Reproductive Healthcare Ltd. Terms and Conditions
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Figure 4 Proportion of live births as a function of the number of oocytes recovered in the original collection cycle (▴), the number of embryos created (■) and the number of frozen embryos transferred (♦). Reproductive BioMedicine Online , DOI: ( /j.rbmo ) Copyright © 2013 Reproductive Healthcare Ltd. Terms and Conditions
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Figure 5 Proportion of frozen embryos actually transferred per thawed embryo as a function of the number of oocytes collected. The decrease in utilization of frozen embryos may reflect decreased viability or increased embryo selection. Reproductive BioMedicine Online , DOI: ( /j.rbmo ) Copyright © 2013 Reproductive Healthcare Ltd. Terms and Conditions
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