Table 1.

 Study population selection and number of individuals related to inclusion/exclusion criteria

Study population, n	Cases	Controls
Individuals from the SCDR born 1973–2013	18,766	74,990
Individuals with missing information from the MBR	2345	11,562
Twins	327	1535
Children of diabetic mothers	318	278
Children of non-Nordic mothers	827	5903
Total sample	14,949	55,712