From: The Brown-Vialetto-Van Laere and Fazio Londe syndrome revisited: natural history, genetics, treatment and future perspectives
Presenting age (years)
Mean
Median
Age range
SD
Group 1* (N=20)
1.4
1.3
0.3 – 3.2
0.8
Group 2* (N=21)
7.9
8.0
4 – 10
1.8
Group 3* (N=28)
13.3
12.5
11 – 17
All patients (N=69)
8.2
9.0
0.3 – 17
5.2