Table 2 Critical Congenital Heart Defects’ prevalence by some sociodemographic characteristics, Turkey, 2018–2020

Gender

 Male

5485 (55.5)

30.0^a

 Female

4399 (44.5)

25.4^b

Maternal age at birth

 < 20 years

404 (4.1)

25.1^a

 20–34 years

7170 (72.5)

25.6^a

 ≥ 35 years

2250 (22.8)

39.8^b

 Unknown

60 (0.6)

Number of fetuses in pregnancy

 Singular

9305 (94.1)

27.1^a

 Twin/triplet

474 (4.8)

42.5^b

 Unknown

110 (1.1)

Gestational age***

 ≥ 37 weeks

7620 (77.1)

24.1^a

 < 37 weeks

2155 (21.8)

55.0^b

 Unknown

109 (1.1)

Birth weight***

 ≥ 2500 gram

7497 (75.8)

22.8^a

 < 2500 gram

2278 (23.0)

83.1^b

 Unknown

109 (1.1)

Mode of delivery***

 Normal

3208 (32.4)

22.7^a

 Cesarean

6332 (64.1)

29.5^b

 Unknown

344 (3.5)

─

Regions

 West

3814 (38.6)

29.5^a

 South

1288 (13.0)

28.5^a

 Central

1826 (18.5)

28.2^a

 North

549 (5.6)

30.3^a

 East

2352 (23.8)

24.0^b

 Unknown

55 (0.6)

─