Table 2: Clinical characteristics of fresh and cryopreserved DETs.
Age DET
Group Fresh Cryopreserved
  N
TR(%)
N(+)
βhCG(%)  
NClin.
gest(%)  
NImpl.
Site(%)  
NTwin
Gest(%)  
N
TR
N(+)
βhCG(%)  
NClin
gest(%)  
NImpl.
Site(%)  
NTwin
Gest(%)  
<35 22 14(64)a 14(64)a 17(39)a 3(21)a 49 29(59)b 28(58)*b 37(39)b 7(25)b
35-37 5 4(80)a 3(60)a 4(40)a 1(33)a 25 17(68)b 16(64)b 17(34)b 2(13)b
38-39 1 1(100) - - - 11 8(73)b 5(50)*b 7(35)b 2(40)b
40-42 - - - - - 10 5(50)b 4(40)b 4(20)b -
Total 28 19(68) 17(61) 21(38) 4(24) 95 59(62) 53(57) 65(35) 11(21)
*One clinical gestation record not found, thus data not included.
aNo significant differences in outcomes between age groups <35 and 35-37 Fresh DETs.
bNo significant differences in outcomes between different age groups of Cryopreserved DETs.
NTR = number of embryo transfers.