Table 3 Multivariate linear regression analysis of the number of frozen blastocysts

Infertility

  Secondary

0.194 ± 0.097

0.042

2.010

0.045

  Primary

REF

 Dose/Duration of Gn

-0.003 ± 0.001

-0.078

-3.692

< 0.001

 Number of oocytes retrieved

0.252 ± 0.014

0.380

18.051

< 0.001

Fertilisation

  ICSI

-0.513 ± 0.103

-0.104

-4.966

< 0.001

  IVF

REF

DFP

  Group A

REF

  Group B

-0.319 ± 0.115

-0.070

-2.769

0.006

  Group C

-0.432 ± 0.154

-0.071

-2.798

0.005