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Table 1 Baseline characteristics of patients with miscarriage and live birth controls

From: Comparison of chromosomal status in reserved multiple displacement amplification products of embryos that resulted in miscarriages or live births: a blinded, nonselection case–control study

Characteristics

Miscarriage cases (n = 28)

Live-birth controls (n = 56)

P value

Maternal age at oocyte retrieval, y

29.6 ± 3.7

29.6 ± 3.2

0.945

Maternal BMI, kg/m2

21.8 ± 3.1

21.3 ± 2.7

0.421

Gravidity

1.0 (0–4)

2.0 (0–4)

0.194a

Parity

0.0 (0–1)

0.0 (0–2)

0.932a

No. of previous miscarriages, n

1.0 (0–4)

2.0 (0–4)

0.095a

Basal E2 level, pg/ml

29.2 ± 9.4

29.0 ± 13.5

0.940

Basal FSH level, IU/ml

5.6 ± 0.9

5.5 ± 1.3

0.726

E2 level on HCG day, pg/ml

3141 ± 1387.9

3127 ± 1110.1

0.962

No. of retrieved oocytes

21.1 ± 10.7

19.3 ± 7.8

0.390

No. of good-quality blastocysts

6.8 ± 4.6

6.6 ± 3.4

0.809

No. of embryos available to transfer

6.9 ± 4.0

6.5 ± 2.8

0.618

Blastocyst transfer

  

0.380b

 D5

19 (67.9)

43 (76.8)

 

 D6

9 (32.1)

13 (23.2)

 

COS protocol

  

0.071b

 Long agonist

4 (14.3)

19 (33.9)

 

 Short agonist

6 (21.4)

15 (26.8)

 

 Antagonist

18 (64.3)

22 (39.3)

 
  1. Values are presented as mean ± SD, n (range), or n (%)
  2. BMI body mass index, E2 estradiol, FSH follicle-stimulating hormone, HCG human chorionic gonadotropin, COS controlled ovarian stimulation
  3. aMann–Whitney U test
  4. bChi-square test