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Table 5 Delivery-related characteristics of the studied men’s firstborn children a

From: Congenital heart disease in men – birth characteristics and reproduction: a national cohort study

  Complex CHD Simple CHD No CHD  
  Count % Count % Count % P-value
Birthweight (g) (mean) b 3651   3526   3521   
complex vs simple        0.294
complex vs none        0.210
simple vs none        0.982
Gestational length (weeks) (mean) b 39.8   39.3   39.3   
complex vs simple        0.134
complex vs none        0.104
simple vs none        0.996
Born preterm c        0.275
Yes 1 1.9 24 7.5 6894 6.3  
No 53 98.1 297 92.5 102898 93.7  
Born small-for-gestational-age c        0.843
Yes 1 1.9 8 2.5 2253 2.1  
No 53 98.1 306 97.5 105787 97.9  
Born large-for-gestational age c        0.836
Yes 1 1.9 10 3.2 3547 3.3  
No 53 98.1 304 96.8 104493 96.7  
Twin birth c        0.492
Yes 0 0 6 1.9 1471 1.3  
No 54 100 315 98.1 108573 98.7  
Instrumental delivery c        0.753
Yes 6 11.1 37 11.5 11324 10.3  
No 48 88.9 284 88.5 98720 89.7  
Caesarean section c        0.551
Yes 7 13.0 54 16.8 16278 14.8  
No 47 87.0 267 83.2 93766 85.2  
Congenital anomalies c        0.961
Yes 3 5.6 15 4.7 5298 4.8  
No 51 94.4 306 95.3 104746 95.2  
  1. aAnalysis performed on all 109 928 eligible children.
  2. bAnalysis of variance corrected by Tukey-Kramer procedure.
  3. cChi-squared test, overall comparisons.