Table 1

Incidence of Down syndrome by year of birth

Year of birthNumber of births registered in Scotland (all people)Down syndrome
nn (%)
199065 97360 (0.09)
199167 02466 (0.10)
199265 78938 (0.06)
199363 33735 (0.06)
199461 65643 (0.07)
199560 05146 (0.08)
199659 29640 (0.07)
199759 44072 (0.12)
199857 31954 (0.09)
199955 14752 (0.09)
200053 07660 (0.11)
200152 52761 (0.12)
200251 27044 (0.09)
200352 43258 (0.11)
200453 95779 (0.15)
200554 38663 (0.12)
200655 69044 (0.08)
200757 78170 (0.12)
200860 04163 (0.10)
200959 04673 (0.12)
201058 79159 (0.10)
201158 59063 (0.11)
201258 02759 (0.10)
201356 01458 (0.10)
201456 72562 (0.11)
201555 09857 (0.11)*
Total1 508 4831479 (0.10)
  • *In 2015, the Down syndrome total is for 11 months only, so the % in 2015 is adjusted to 11/12 months in the general population.