| Value | Category | Cases | |
|---|---|---|---|
| 1 | Produces too much smoke and soot | 45 |
25%
|
| 2 | Takes a long time to cook the food | 15 |
8.3%
|
| 3 | Needs a lot of maintenance and/or repairs | 6 |
3.3%
|
| 4 | Inconvenient/difficult to use (e.g. stir the food, serve food to the students) | 9 |
5%
|
| 555 | Other, specify | 4 |
2.2%
|
| 888 | No problem | 101 |
56.1%
|
| Sysmiss | 16 |