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Table 5 Characteristics of patients in Subgroup B1 and Subgroup B2

From: The effect of large follicle puncture and aspiration on the outcomes of IVF-ET in patients with asynchronized follicles under the long GnRH-a protocol: a retrospective cohort study

Variables

Subgroup B1(n = 48)

Subgroup B2(n = 52)

P-value

Age (years)

33.06 ± 4.88

31.60 ± 4.18

0.109

Body mass index (kg/m2)

24.35 ± 3.55

23.68 ± 3.75

0.368

Duration of infertility (years)

3.60 ± 2.31

3.71 ± 2.53

0.826

Types of infertility (n, %)

 Primary infertility

17/48 (35.4%)

24/52 (46.2%)

0.275

 Secondary infertility

31/48 (64.6%)

28/52 (53.8%)

Insemination method (n, %)

 IVF

37/48 (77.1%)

38/52 (73.1%)

0.644

 ICSI

11/48 (22.9%)

14/52 (26.9%)

 Basal FSH (mIU/ml)

4.16 ± 2.27

4.19 ± 1.86

0.932

 Basal LH (mIU/ml)

2.35 ± 1.92

2.52 ± 1.86

0.655

 Basal E2 (pg/ml)

26.81 ± 13.93

30.52 ± 20.32

0.294

 AFC

16.04 ± 6.48

17.62 ± 7.04

0.249

 Gn dosage (IU)

2244.01 ± 440.74

2083.41 ± 464.71

0.080

 Gn usage time (days)

12.19 ± 1.72

11.98 ± 2.34

0.618

 Diameter differences between dominant follicles and secondary follicles (mm)

4.41 ± 1.17

4.03 ± 1.14

0.106

  1. Data are presented as mean ± SD for continuous variables and n (%) for categorical variables. All P values were assessed with the use of student’s t-test or χ2
  2. BMI body mass index, FSH follicle-stimulating hormone, LH luteinizing hormone, E2 estradiol, AFC antral follicle count