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Table 1 Comparison of the maternal demographic characteristics among groups A, B and C

From: Pregnancy outcomes of dichorionic triamniotic triplet pregnancies after in vitro fertilization-embryo transfer: multifoetal pregnancy reduction versus expectant management

characteristic

Group A

Group B

Group C

Group A vs. Group C

Group B vs. Group C

Group A vs. Group B

(n = 84)

(n = 149)

(n = 65)

P - value

P - value

P - value

Maternal age (years)

29.6 ± 4.2

29.4 ± 3.9

28.4 ± 3.7

NS

NS

NS

BMI (kg/m2)

21.5 ± 2.7

21.7 ± 3.0

21.9 ± 3.1

NS

NS

NS

Infertility duration (years)

4.4 ± 3.5

4.3 ± 2.8

4.1 ± 3.2

NS

NS

NS

Infertility type

NS

NS

NS

 Primary, n (%)

39 (46.4)

62 (41.6)

36 (55.4)

 Secondary, n (%)

45 (53.6)

87 (58.4)

29 (44.6)

Cause of infertility

NS

NS

NS

 Male factor , n (%)

58 (69.0)

94 (63.1)

47 (72.3)

 Female factor , n (%)

3 (3.6)

3 (2.0)

1 (1.5)

 Female + male factors, n (%)

23 (27.4)

49 (32.9)

14 (21.5)

 Unexplained, n (%)

0 (0)

3 (2.0)

3 (4.6)

Transfer cycle

1.2 ± 0.5

1.1 ± 0.5

1.1 ± 0.5

NS

NS

NS

 1, n (%)

72 (85.7)

135 (90.6)

58 (89.2)

NS

NS

NS

 ≥2, n (%)

12 (14.3)

14 (9.4)

7 (10.8)

Insemination methods

NS

NS

NS

 IVF, n (%)

49 (58.3)

96 (64.4)

45 (69.2)

 ICSI, n (%)

9 (10.7)

20 (13.4)

9 (13.8)

 IVF/ICSI, n (%)

26 (31.0)

33 (22.1)

11 (16.1)

  1. Group A = DCTA pregnancy reduced to MC singleton pregnancy; Group B = DCTA pregnancy reduced to MCDA twin pregnancy; Group C = DCTA pregnancy were managed expectantly
  2. DCTA dichorionic triamniotic, MC monochorionic, MCDA monochorionic diamniotic, BMI body mass index, NS not significant, IVF in vitro fertilization, ICSI intracytoplasmic sperm injection