Table 3. Frequency of IA in males with ID and male control samples in different populations.

Population	CGG repeats' range	IA frequency in ID patients (%)	IA frequency in controls (%)	Reference
UK	41–60	4.4	2.9a	Youings et al11
Brazil	40–60	6.4	2.8a	Haddad et al10
Tasmania	41–60	3.4	2.4	Mitchell et al12
USA	41–60	4.3	4.0	Crawford et al13
Canada	40–54	4.2	3.7	Patsalis et al14
Cyprus	40–54	3.5	4.3	Patsalis et al14
France	40–55	2.8	2.2	Mornet et al15

Comparison of studies reported in the literature.

^aStatistically significant difference.