| Value | Category | Cases | |
|---|---|---|---|
| 0 | received no inject. | 1274 |
19.8%
|
| 1 | 1249 |
19.4%
|
|
| 2 | 2300 |
35.7%
|
|
| 3 | 1282 |
19.9%
|
|
| 4 | 106 |
1.6%
|
|
| 5 | 162 |
2.5%
|
|
| 6 | 1 |
0%
|
|
| 7 | 7+ | 2 |
0%
|
| 8 | don't know | 67 |
1%
|
| 9 | 5 |
0.1%
|
|
| 11 | .Z | 1784 |