| Value | Category | Cases | |
|---|---|---|---|
| -9 | Missing | 0 |
0%
|
| -8 | Uncodeabel | 0 |
0%
|
| -7 | N/a | 0 |
0%
|
| 0 | Did not grow maize in 2002 | 64 |
6.6%
|
| 1 | Yields have decreased | 475 |
48.8%
|
| 2 | Yields unchanged | 115 |
11.8%
|
| 3 | Yields have increased | 319 |
32.8%
|
| Sysmiss | 4020 |