| Value | Category | Cases | |
|---|---|---|---|
| 1 | More than usual | 3 |
0.1%
|
| 2 | About the same | 130 |
5.3%
|
| 3 | Less than usual | 278 |
11.4%
|
| 4 | None | 0 |
0%
|
| 5 | missing | 2 |
0.1%
|
| 6 | Other | 1 |
0%
|
| 8 | dtk | 0 |
0%
|
| 9 | na | 2016 |
83%
|
| Sysmiss | 328 |