| Value | Category | Cases | |
|---|---|---|---|
| -2 | Don't know | 1 |
0.1%
|
| -1 | Refused | 0 |
0%
|
| 1 | Vernacular language | 268 |
30%
|
| 2 | Swahili | 620 |
69.4%
|
| 3 | Foreign language | 4 |
0.4%
|
| Sysmiss | 2106 |