Ex Other Countries
Age Group
Present Form
Normal Form
10 +
5 in I
11 +
2 in II
I
in 7 in II
27.
3 in III
1 in IV
I
19
Estimated No. of
years retarded
II
one year
12 +
1
in I
III
two years
3 in II
one year
2 in III
5 in IV
13 +
2 in III
IV
one year
6 in IV
14 +
6 in IV
V
one year
2 in V
15 +
322
3 in IV
VI
'two years
in V
one year
in VI
16+
2-
in V
1 in VI
17 +
1 in VI
two years one year
two years