Rett syndrome in Ireland: a demographic study

Table 7 Distribution of RTT forms in Ireland compared to individuals in the other countries

RTT type	RTT types and percentage distribution of affected individuals
RTT type	US	IT	DK	NL	SE	AU	UK	BR	PL	INTL	IE
Typical RTT	85	65	–	80	–	68	76	68	–	80	48∇
Atypical RTT	13	35	–	20	–	32	21	27	–	20	28

The tabular representation of RTT forms- classic/typical and atypical RTT in the study cohort in Ireland and other international cohorts, from the USA, Italy, Denmark, the Netherlands, Sweden, Australia, the UK, Brazil, Poland, and an international cohort. The figures in Ireland could be affected by the lack of diagnosis and genetic information. The numbers shown in bold for Ireland indicate an extreme end parameter that has been reported in Ireland and differs greatly from other countries. Instances where the frequency of findings in Ireland is the lowest among all other countries, it is denoted by the symbol “∇”

ISSN: 1750-1172