Table 1 Severe MSN_I in 1739 children born in 1980–1994, according to the presence of a recognised rare disease
ImpairmentNo withimpairment (%*)No withrare disease (%†)
NSM impairment459 (26.4)189 (41.2)
Intellectual impairment344 (19.8)55 (16.0)
Psychiatric disorder368 (21.1)12 (3.3)
Hearing impairment156 (9.0)58 (37.2)
Visual impairment69 (4.0)56 (81.2)
More than one severe MSN_I343 (19.7)89 (25.9)
Total1739 (100)459 (26.4)

  • NSM, neuromuscular, skeletal and movement.

  • *Percentage of total with MSN_I.

  • †Percentage of those with the particular impairment who also had a rare disease.