Results of blastocyst transfers Jan 2007 to Dec 2009

3 years data showing results following transfer of blastocysts
Age	< 35yrs	35-37 yrs	38-39 yrs	40-42 yrs	43 + yrs	Recipients of donated eggs
Blastocyst transfers	238	109	42	41	9	88
All pregnancies (% of transfers)	141 (59%)	71 (65%)	27 (64%)	22 (54%)	4 (44%)	54 (61%)
Births or ongoing pregnancies (% of transfers)	49%	44%	36%	24%	22%	47%
% twins	33%	35%	32%	23%	0	30%

1) Although pregnancy rates are high across all age groups when blastocysts are transferred, the rate of pregnancy loss is higher as women become older