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