Table 1 Rates of PTB and LBW among infants with CHD in Changsha City, China, 2022–2024.

From: Factors associated with preterm birth and low birth weight among infants with congenital heart disease in Changsha City, China, 2022–2024

Year

Number of live births (n)

Number of BDs (n)

Number of CHD (n)

PTB in infants with CHD

LBW infants with CHD

Number

Rate (%)

Number

Rate (%)

2022

79,255

1156

560

79

14.11

68

12.14

2023

75,719

1104

480

77

16.04

70

14.58

2024

83,170

1209

420

76

18.10

72

17.14

Total

238,144

3469

1460

232

15.89

210

14.38

  1. BDs birth defects, CHD congenital heart disease, PTB preterm birth, LBW low birth weight.