Table 1 Maternal and neonatal characteristics.

From: What drives outcomes in infants of mothers with congenital heart disease? A mediation analysis

Maternal characteristics

 

No maternal CHD

Maternal CHD

p-value

N

 

15 698

3 533

 

Maternal age

<18 years

264 (1.7%)

56 (1.6%)

0.90

 

18–34 years

12 222 (77.9%)

2 759 (78.1%)

 
 

>34 years

3 212 (20.5%)

718 (20.3%)

 

Parity

Nulliparous

5 911 (37.7%)

1 635 (46.3%)

<0.001

 

Multiparous

9 787 (62.3%)

1 898 (53.7%)

 

Delivery Mode

Vaginal delivery

10 294 (65.6%)

2 079 (58.8%)

<0.001

 

C-section

5 404 (34.4%)

1 454 (41.2%)

 

MPSa

No

14 434 (91.9%)

3 047 (86.2%)

<0.001

 

Yes

1 264 (8.1%)

486 (13.8%)

 

Preeclampsia

No

15 015 (95.6%)

3 247 (91.9%)

<0.001

 

Yes

683 (4.4%)

286 (8.1%)

 

Gestational hypertension

No

15 244 (97.1%)

3 389 (95.9%)

<0.001

 

Yes

454 (2.9%)

144 (4.1%)

 

Placental abruption

No

15 555 (99.1%)

3 471 (98.2%)

<0.001

 

Yes

143 (0.9%)

62 (1.8%)

 

Metabolic syndromeb

No

15 339 (97.7%)

3 316 (93.9%)

<0.001

 

Yes

359 (2.3%)

217 (6.1%)

 

Type 2 diabetes

No

15 616 (99.5%)

3 490 (98.8%)

<0.001

 

Yes

82 (0.5%)

43 (1.2%)

 

Preexisting hypertension

No

15 472 (98.6%)

3 392 (96.0%)

<0.001

 

Yes

226 (1.4%)

141 (4.0%)

 

Dyslipidemia

No

15 633 (99.6%)

3 485 (98.6%)

<0.001

 

Yes

65 (0.4%)

48 (1.4%)

 

Maternal Obesity

No

12 352 (78.7%)

2 774 (78.5%)

0.83

 

Yes

3 346 (21.3%)

759 (21.5%)

 

Congestive heart failure

No

15 682 (99.9%)

3 409 (96.5%)

<0.001

 

Yes

16 (0.1%)

124 (3.5%)

 

Infection during pregnancy

No

13 617 (86.7%)

2 784 (78.8%)

<0.001

 

Yes

2 081 (13.3%)

749 (21.2%)

 

Chorioamnionitis

No

15 227 (97.0%)

3 369 (95.4%)

<0.001

 

Yes

471 (3.0%)

164 (4.6%)

 

Other infection

No

13 997 (89.2%)

2 896 (82.0%)

<0.001

 

Yes

1 701 (10.8%)

637 (18.0%)

 

Neonatal characteristics

N

 

15 720

3 930

 

Sex

female

7 651 (48.7%)

1 934 (49.2%)

0.54

 

male

8 069 (51.3%)

1 996 (50.8%)

 

Prematurity

No

14 406 (91.6%)

3 382 (86.1%)

<0.001

 

Yes

1 314 (8.4%)

548 (13.9%)

 

Multiple Gestation

No

15 242 (97.0%)

3 786 (96.3%)

0.046

 

Yes

478 (3.0%)

144 (3.7%)

 

SGA

No

14 299 (91.0%)

3 425 (87.2%)

<0.001

 

Yes

1 421 (9.0%)

505 (12.8%)

 

CCHD

No

15 656 (99.6%)

3 858 (98.2%)

<0.001

 

Yes

64 (0.4%)

72 (1.8%)

 

Other major malformations or chromosomal anomalies

No

15 401 (98.0%)

3 794 (96.5%)

<0.001

 

Yes

319 (2.0%)

136 (3.5%)

 
  1. aMaternal Placental Syndrome, consisting of any of the following: preeclampsia, gestational hypertension, placental abruption.
  2. bMetabolic Syndrome consisting of any of the following: type 2 diabetes, preexisting hypertension, dyslipidemia, maternal obesity.