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Table 2 The association between geographical region of mothersbirth and sex ratio at live birth in England and Wales 2007-2011

From: Is the mothers’ country of birth associated with the sex of their offspring in England and Wales from 2007 to 2011?

Region of mother’s birth Number of males born Number of females born Sex ratio Odds ratio* 95% Confidence interval p value
UK 1 375 306 1 304 933 1.054 1 - -
EU 121 411 115 543 1.051 0.997 0.99 - 1.01 0.486
Rest of Europe (non European Union) 19 034 17 711 1.075 1.020 1.00 - 1.04 0.063
North Africa 9 258 8 755 1.057 1.00 0.97 - 1.03 0.823
Western Africa 32 674 31 869 1.025 0.97 0.96 - 0.99 0.001
Central Africa 6 688 6 375 1.049 1.00 0.96 – 1.03 0.79
Eastern Africa 38 822 37 875 1.025 0.97 0.96 - 0.99 <0.001
Southern Africa 12 101 11 313 1.070 1.01 0.99 - 1.04 0.259
North America 11 356 10 783 1.053 1.00 0.97 - 1.03 0.956
Central America 828 842 0.983 0.93 0.85 - 1.03 0.157
South America 8 455 7 744 1.092 1.04 1.00 - 1.07 0.025
Caribbean 8 506 8 066 1.055 1.00 0.97 - 1.03 0.970
Middle East 15 936 14 780 1.078 1.02 1.00 - 1.05 0.047
Central Asia 793 751 1.056 1.00 0.91 - 1.11 0.970
Eastern Asia 14 244 13 437 1.060 1.01 0.98 - 1.03 0.631
Southern Asia 118 432 113 979 1.039 0.99 0.98 - 0.99 0.001
South East Asia 17 522 16 126 1.087 1.03 1.01 - 1.05 0.005
Australasia 9 057 8 532 1.062 1.01 0.98 - 1.04 0.635
Other Oceania 601 595 1.010 0.96 0.86 - 1.07 0.463
  1. *The reference group is mothers who were born in the UK.