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Table 3 Comparison of pregnancy outcomes between IVF and ICSI pregnancies

From: Analysis of the risk of complications during pregnancy in pregnant women with assisted reproductive technology: a retrospective study using registry linkage from 2013 to 2018 in Shanghai, China

Parameter

Full Cohort

P valuec

Singletons Only

P value

IVFa (n = 5144)

ICSIb (n = 2958)

IVF (n = 3697)

ICSI (n = 2263)

Maternal age (years, mean (SD))

32.5 ± 3.6

32.4 ± 3.7

0.169

32.7 ± 3.7

32.6 ± 3.8

0.427

Gestational age (wk, mean (SD))

37.7 ± 2.2

37.8 ± 2.0

0.003

38.5 ± 1.7

38.4 ± 1.6

0.925

< 32 weeks (No.(%))

94(1.8)

44(1.5)

0.255

33(0.9)

18(0.8)

0.693

< 37 weeks (No.(%))

1050(20.4)

532(18.0)

0.008

266(7.2)

153(6.8)

0.525

Birth weight (g, mean (SD))

3116.3 ± 614.1

3155.8 ± 595.8

0.005

3346.2 ± 497.4

3345.8 ± 499.0

0.978

< 1500 g (No.(%))

87(1.7)

40(1.4)

0.235

24(0.6)

15(0.7)

0.949

< 2500 g (No.(%))

749(14.6)

372(12.6)

0.012

166(4.5)

97(4.3)

0.710

≥4000 g (No.(%))

275(5.3)

170(5.7)

0.450

275(7.4)

170(7.5)

0.916

Obstetrical events (No.(%))

 Cesarean section

3936(76.5)

2247(76.0)

0.609

2543(68.8)

1575(69.6)

0.655

 Placenta previa

361(7.0)

197(6.7)

0.540

231(6.2)

137(6.1)

0.762

 Hypertensive disorders

636(12.4)

381(12.9)

0.499

340(9.2)

238(10.5)

0.095

 Gestational Diabetes

1136(22.1)

670(22.7)

0.555

805(21.8)

498(22.0)

0.834

  1. a. IVF, in vitro fertilization
  2. b. ICSI, intracytoplasmic sperm injection
  3. c. Date are statistically significant at p < 0.05