| Value | Category | Cases | |
|---|---|---|---|
| -9 | never | 470 |
16.8%
|
| -8 | dk | 0 |
0%
|
| 0 | Less than a year ago | 639 |
22.8%
|
| 1 | 454 |
16.2%
|
|
| 2 | 387 |
13.8%
|
|
| 3 | 219 |
7.8%
|
|
| 4 | 112 |
4%
|
|
| 5 | 145 |
5.2%
|
|
| 6 | 56 |
2%
|
|
| 7 | 23 |
0.8%
|
|
| 8 | 45 |
1.6%
|
|
| 9 | 9 |
0.3%
|
|
| 10 | 89 |
3.2%
|
|
| 11 | 6 |
0.2%
|
|
| 12 | 11 |
0.4%
|
|
| 13 | 7 |
0.3%
|
|
| 14 | 6 |
0.2%
|
|
| 15 | 35 |
1.3%
|
|
| 16 | 3 |
0.1%
|
|
| 17 | 1 |
0%
|
|
| 18 | 6 |
0.2%
|
|
| 19 | 1 |
0%
|
|
| 20 | 36 |
1.3%
|
|
| 22 | 1 |
0%
|
|
| 24 | 1 |
0%
|
|
| 25 | 7 |
0.3%
|
|
| 27 | 1 |
0%
|
|
| 29 | 1 |
0%
|
|
| 30 | 12 |
0.4%
|
|
| 32 | 2 |
0.1%
|
|
| 33 | 2 |
0.1%
|
|
| 37 | 2 |
0.1%
|
|
| 38 | 2 |
0.1%
|
|
| 40 | 5 |
0.2%
|
|
| 50 | 1 |
0%
|
|
| 56 | 1 |
0%
|
|
| 60 | 1 |
0%
|
|
| 98 | Never had exam | 0 |
0%
|
| Sysmiss | 1866 |