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Table 1 Sample description—Clinical forms, age at the evaluation and age at diagnosis

From: Rett syndrome: a wide clinical and autonomic picture

Clinical forms N. % Age at the evaluation
Mean (SD)
Age at the diagnosis
Mean (SD)
Classical 98 64,9 12,5 (10,2) 6,7 (8,5)
Z-RTT 19 12,6 12,5 (7,9) 7,3 (5,6)
Hanefeld 13 8,6 6,1 (4,8) 2,6 (1,7)
Congenital 1 0,7 2 1
ARTT-NOS 20 13,2 13,5 (9,5) 8,45 (4,8)
Total 151 100