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. 1999 Oct 2;319(7214):887–888. doi: 10.1136/bmj.319.7214.887

Table.

Seasonal pattern of dates of birth in cohorts of children with diabetes compared with that expected from national birth rates

Region No of cases χ2 for seasonality of birth P value
Great Britain:
 Scotland* 2408 8.9 0.01
 Yorkshire* 1232 8.3 0.01
 England and Wales* 1270 4.9 0.09
 Oxford 758 5.2 0.07
 Leicester 329 7.2 0.03
 Total 5997 10.2 0.006
Austria 895 0.4 0.8
Czech Republic 1512 3.0 0.2
Denmark 296 3.3 0.2
Germany (Baden-Württemberg) 1303 1.4 0.5
Italy (Lazio) 471 1.9 0.4
Lithuania 486 0.8 0.6
Luxembourg 72 4.7 0.1
Malta 98 5.6 0.06
Northern Ireland 462 1.8 0.4
Poland 448 0.4 0.8
Romania 185 2.4 0.3
Italy (Sardinia) 886 1.7 0.4
Slovakia 889 3.0 0.2
Spain 914 1.6 0.5
Sweden (Stockholm) 520 0.3 0.8
*

Cohorts contain patients reported previously.3