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Table 2 Population characteristics by region for the period 2000–2004.

From: Regional perinatal mortality differences in the Netherlands; care is the question

  North   East   West   South   Chi-Square
  # % # % # % # %  
Number of singleton pregnancies 87,857 100 200,158 100 416,768 100 199,220 100  
Maternal age          
   <20 years 1,805 2.1 3,258 1.6 8,179 2.0 3,344 1.7 p < 0.0001
   20–34 years 71,651 81.6 161,834 80.9 322,647 77.4 162,188 81.4  
   >= 35 years 14,401 16.4 35,066 17.5 85,942 20.6 33,688 16.9  
Parity          
   Nulliparous 40,459 46.1 89,976 45.0 197,514 47.4 93,654 47.0 p < 0.0001
   Parity 1 32,160 36.6 72,213 36.1 143,731 34.5 72,746 36.5  
   Parity 2+ 15,238 17.3 37,969 19.0 75,523 18.1 32,820 16.5  
Ethnicity non-western 6,356 7.2 20,810 10.4 94,415 22.7 23,206 11.6 p < 0.0001
Heavy smoking 727 0.8 1,102 0.6 1,678 0.4 1,036 0.5 p < 0.0001
Urbanisation          
   Very urban 6,332 7.2 6,107 3.1 152,444 36.6 10,505 5.3 p < 0.0001
   Middle 44,806 51.0 149,537 74.7 232,546 55.8 138,893 69.7  
   Very rural 36,719 41.8 44,514 22.2 31,778 7.6 49,822 25.0  
SES          
   High 13,175 15.0 46,103 23.0 137,766 33.1 40,413 20.3 p < 0.0001
   Middle 41,321 47.0 112,929 56.4 163,727 39.3 120,345 60.4  
   Low 33,361 38.0 41,126 20.5 115,275 27.7 38,462 19.3