Table 3 Neonatal Outcomes in ART and Spontaneously Pregnant Groups with Stratified Analysis by Birth Plurality.

From: Maternal and Live-birth Outcomes of Pregnancies following Assisted Reproductive Technology: A Retrospective Cohort Study

 

Total

Singletons

Twins

ART (n = 2641)

Controls (n = 5282)

P

ART (n = 1659)

Controls (n = 5193)

P

ART (n = 982)

Controls (n = 89)

P

Preterm labour

1024/2641 (38.8)

556/5282 (10.5)

<0.001

291/1659 (17.5)

489/5193 (9.4)

<0.001

733/982 (74.6)

67/89 (75.3)

1

Low birthweight

1321/3623 (36.5)

430/5371 (8.0)

<0.001

170/1659 (10.2)

314/5193 (6.0)

<0.001

1151/1964 (58.6)

116/178 (65.2)

0.11

Macrosomia

121/3623 (3.3)

387/5371 (7.2)

<0.001

120/1659 (7.2)

387/5193 (7.5)

0.788

1/1964 (0.0)

0 (0.0)

—

Small for date infant

137/3623 (3.8)

63/5371 (1.2)

<0.001

17/1659 (1.0)

43/5193 (0.8)

0.451

120/1964 (6.1)

20/178 (11.2)

0.016

1 minute Apgar  ≤ 7

178/3623 (4.9)

159/5371 (3.0)

<0.001

64/1659 (3.9)

152/5193 (2.9)

0.063

114/1964 (5.8)

7/178 (3.9)

0.675

5 minute Apgar ≤ 7

43/3623 (1.2)

13/5371 (0.2)

<0.001

11/1659 (0.7)

13/5193 (0.3)

0.028

32/1964 (1.6)

0 (0.0)

—

  1. Note: Data are n (%).
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