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Table 4 IVF/ICSI outcome characteristics of ICSI only and IVM with ICSI patients

From: Cut-off point of mature oocyte for routine clinical application of rescue IVM: a retrospective cohort study

 

Mature oocytes < 9

Mature oocytes ≥ 9

 

IVM + ICSI

(n = 873)

ICSI

(n = 1725)

P

IVM + ICSI

(n = 39)

ICSI

(n = 2716)

P

Fresh cycle

      

No. of fresh ET cycles

591

1225

 

7

1741

 

Implantation rate (%)

410/838 (48.9)

753/1671 (45.1)

0.067

5/9 (55.6)

1199/2451 (48.9)

0.749

Clinical pregnancy rate, n (%)

333 (56.3)

629 (51.3)

0.046

4 (57.1)

1004 (57.7)

1.000

Abortion rate, n (%)

40 (12.0)

65 (10.3)

0.427

0

113 (11.3)

NA

LBR per ET, n (%)

293/591 (49.6)

564/1225 (46.0)

0.157

4 (57.1)

891 (51.2)

1.000

LBR per oocytes retrieval, n (%)

293/873 (33.6)

564/1725 (32.7)

0.657

4 (10.3)

891 (32.8)

0.003

FET cycle

      

Cryopreservation rate, n (%)

692 (79.3)

958 (55.5)

< 0.001

35 (89.7)

2367 (87.2)

0.811

No. of freeze-all cycles

248 (28.4)

285 (16.5)

< 0.001

30 (76.9)

916 (33.7)

< 0.001

No. of FET cycles

606

717

 

39

2169

 

Implantation rate

393/775 (50.7)

373/914 (40.8)

< 0.001

37/56 (66.1)

1712/3026 (56.6)

0.155

Clinical pregnancy rate, n (%)

337 (55.6)

335 (46.7)

0.001

28 (71.8)

1394 (64.3)

0.331

Abortion rate, n (%)

59 (17.5)

69 (20.6)

0.308

2 (7.1)

184 (13.2)

0.569

LBR per FET, n (%)

278/606 (45.9)

266/717 (37.1)

0.001

26 (66.7)

1210 (55.8)

0.175

LBR per oocytes retrieval, n (%)

278/873 (31.8)

266/1725 (15.4)

< 0.001

26 (66.7)

1210 (44.6)

0.006

Cumulative outcomes

      

CPR per oocytes retrieval

616 (70.6)

932 (54.0)

< 0.001

32 (82.1)

2230 (82.1)

0.993

CLBR per oocytes retrieval

571 (65.4)

830 (48.1)

< 0.001

30 (76.9)

2101 (77.4)

0.949