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Table 2 Information on embryos transferred: average embryos transferred, quality of embryos, further categorized by cleavage stage vs blastocyst and single vs multiple embryo transfers

From: hMG addition affects the change in progesterone level during IVF stimulation and LBR: a retrospective cohort study

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Transfer Cycle Number (%)

Embryos per Transfer

Good Quality Embryo (%)

Fair Quality Embryo (%)

Poor Quality Embryo (%)

Cleavage Stage

1 ET

18 (6)

1

7 (39)

6 (33)

5 (28)

Cleavage Stage

2 + ET

41 (14)

2.3

14 (34)

18 (44)

9 (22)

Blastocyst

Stage

1 ET

145 (50)

1

140 (96)

4 (3)

1 (1)

Blastocyst

Stage

1 ET

87 (30)

2.1

75 (86)

10 (11)

2 (2)

Total

291

1.5

236 (81)

38 (13)

17 (6)

  1. Embryo Quality was defined as: Cleavage stage: Good = 8-cell with Grade 1 or 1.5, Fair = 6–10 cell with Grade 2 or better, Poor = 0-5-cell or 11+ -cell Grace 2.5-3; Blastocyst Good = 2BB or better, Fair = C x 1, Poor = Cx2