| Value | Category | Cases | |
|---|---|---|---|
| 1 | More than usual | 21 |
0.9%
|
| 2 | About the same | 162 |
6.7%
|
| 3 | Less than usual | 167 |
6.9%
|
| 4 | None | 2 |
0.1%
|
| 5 | missing | 0 |
0%
|
| 6 | Other | 0 |
0%
|
| 8 | dtk | 0 |
0%
|
| 9 | na | 2077 |
85.5%
|
| Sysmiss | 329 |