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Table 1 Baseline characteristics by congenital disease status of 939,678 births in 551,119 women. Denmark, 1997–2014

From: Length of hospital stay after delivery among Danish women with congenital heart disease: a register-based cohort study

  Maternal congenital heart disease
No Simple Moderate Complex
na (%) na (%) na (%) na (%)
Maternal age (years) 935,959   2242   1093   384  
 < 25   12.6   20.0   15.7   19.3
 25–29   33.8   32.9   36.2   35.1
 30–34   36.1   33.4   34.1   34.1
 ≥35   17.5   13.7   14.0   11.5
Parity 922,147   2210   1075   381  
 Nulli   43.9   48.5   48.6   45.1
 Primi   38.7   36.3   36.8   35.2
 Multi   17.4   15.2   14.6   19.7
Maternal ethnicity 935,959   2242   1093   384  
 Western   98.7   97.8   98.9   96.4
 Non-western   1.3   2.2   1.1   3.6
Maternal educational level 923,832   2210   1078   375  
 Low   19.1   27.1   22.6   27.5
 Medium   43.8   40.5   41.6   46.4
 High   37.1   32.4   35.8   26.1
Year of delivery (groups) 935,959   2242   1093   384  
 1997–2001   29.6   22.3   25.3   23.2
 2002–2006   28.5   25.3   26.3   27.9
 2007–2011   27.5   32.3   30.9   33.8
 2012–2014   14.4   20.1   17.5   16.1
Mode of delivery 935,959   2242   1093   384  
 Cesarean section   18.5   24.3   23.1   29.2
  1. aNumber of births