| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. The child does not make any sounds, only crying sounds | 13 |
5.1%
|
| 1 | 1. The child babbles or mimics one vowel sound | 62 |
24.4%
|
| 2 | 2. The child mimics several vowel sounds | 53 |
20.9%
|
| 3 | 3. The child babbles vowel sounds spontaneously | 126 |
49.6%
|