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Table 1 Baseline characteristics and treatment outcomes of women with or without live birth

From: Cumulative live birth rates according to the number of oocytes retrieved following the “freeze-all” strategy

Variables

Live birth (N = 2643)

No live birth (N = 253)

P

Age (years)

28.0(25–30)

27.5(25–31)

NS

Body mass index (kg/m2)

21.9(20.0–24.2)

22.0(19.9–24.4)

NS

Basal follicle-stimulating hormone (IU/L)

5.97(5.09–7.0)

6.11(5.01–7.15)

NS

Basal luteinizing hormone (IU/L)

5.69(4.25–8.16)

5.50(4.21–7.60)

NS

Basal antral follicular count (n)

18(13–24)

17(11–24)

0.031

Cause of infertility

  

NS

 Male factor

26.0% (686/2643)

25.3% (64/253)

 

 Tubal disease

39.0% (1032/2643)

41.5% (105/253)

 

 PCOS

13.7% (363/2643)

9.9% (25/253)

 

 Endometriosis

1.3% (33/2643)

0.8% (2/2530)

 

 Unexplained

20.0% (529/2643)

22.5% (57/253)

 

Insemination method

  

NS

 IVF

69.7% (1838/2643)

67.6% (171/253)

 

 ICSI

30.3% (798/2643)

32.4% (82/253)

 

Stimulation protocols

  

NS

 Long-acting GnRH-a long protocol

35.4% (936/2643)

33.2% (84/253)

 

 Short-acting GnRH-a long protocol

63.5% (1647/2643)

65.2% (165/253)

 

 Unrecorded

1.1% (33/2643)

1.6% (4/253)

 

Gonadotropin dosage (IU)

1537(1237–1987)

1650(1331–2250)

0.002

Fertilization rate(%)

0.69(0.57–0.80)

0.61(0.46–0.73)

0.000

Peak E2 on HCG day (IU/L)

7276(4991–9484)

7084(4448–9103)0

NS

No. of oocytes retrieved(n)

20(16–25)

18(14–21)

0.000

  1. Note: Data are presented as medians (interquartile ranges, IQRs) and percentiles (numbers). P < 0.05 was set as indicating a significant difference
  2. PCOS Polycystic ovary syndrome, IVF In vitro fertilization, ICSI Intracytoplasmic sperm injection, E2 Oestradiol, NS nonsignificant, defined as P ≥ 0.05
  3. The bold values indicated that the difference was significant