1. The impact of consumer affordability on access to assisted reproductive technologies and embryo transfer practices: an international analysis 
Georgina M. Chambers, Ph.D., M.B.A., B.App.Sci., Van Phuong Hoang, Ph.D., M.P.P., B.Econ., Elizabeth A. Sullivan, M.D., M.P.H., M.Med., M.B.B.S., Michael G. Chapman, M.B.B.S., Osamu Ishihara, M.D., Ph.D., Fernando Zegers-Hochschild, M.D., Karl G. Nygren, M.D., Ph.D., G. David Adamson, M.D. 
Fertility and Sterility 
Volume 101, Issue 1, Pages e4 (January 2014)
DOI: /j.fertnstert
Copyright © 2014 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Scatterplots of outcome variables and affordability ( ). (A) Correlation between affordability and utilization (number of fresh nondonor cycles per million women of reproductive age [15–49 y]). Correlation coefficient = −0.35. (B) Correlation between affordability and average number of embryos transferred in fresh nondonor cycles. Correlation coefficient = (C) Correlation between affordability and percentage of fresh nondonor embryo transfer cycles in which a single-embryo was transferred (SET). U.S. state data represent “elective” SET; all other jurisdictions represent SET. Correlation coefficient = −0.44. (D) Correlation between affordability and percentage of fresh nondonor embryo transfer cycles in which three or more embryos were transferred. Correlation coefficient = 0.52.
Fertility and Sterility  , e4DOI: ( /j.fertnstert )
Copyright © 2014 American Society for Reproductive Medicine Terms and Conditions

3. Supplemental Figure 1
Quantile regressions and confidence intervals for the outcome variables and affordability (2006 to 2007). (A) Quantile regression for utilization (number of fresh nondonor cycles per million women of reproductive age [15–49 y]) and affordability. The coefficients were significant (P<.01) at all values of Utilization, with the affordability coefficients ranging from −0.042 at the 10th percentile to −0.032 at the 75th percentile. (B) Quantile regression for average number of embryos transferred in fresh cycles and affordability. The affordability coefficients were significant (P<.01) at the 10th percentile (coefficient = 0.024) through to the 75th percentile (coefficient = 0.014). (C) Quantile regression for percentage of fresh cycles transferring a single embryo and affordability. The coefficients were significant (P<.01) at the lower and upper percentiles but not for the 25th through to the 75th percentiles. 10th percentile coefficient = −0.025; 90th percentile coefficient = − (D) Quantile regression for percentage of fresh cycles with three or more embryos and affordability. The coefficients were significant at the 10th percentile (coefficient = 0.938; P<.01) through to the 75th percentile (coefficient = 0.792; P<.05), but not at the 90th percentile.
Fertility and Sterility  , e4DOI: ( /j.fertnstert )
Copyright © 2014 American Society for Reproductive Medicine Terms and Conditions