| Value | Category | Cases | |
|---|---|---|---|
| 1 | Carelessness or error | 2 |
40%
|
| 2 | Lack of knowledge about the use of the appliance | 0 |
0%
|
| 3 | Faulty wiring/connection | 2 |
40%
|
| 555 | Other, specify | 1 |
20%
|
| Sysmiss | 2391 |