| Value | Category | Cases | |
|---|---|---|---|
| 0 | received no injection | 1090 |
10.9%
|
| 1 | 2553 |
25.6%
|
|
| 2 | 3974 |
39.8%
|
|
| 3 | 1147 |
11.5%
|
|
| 4 | 166 |
1.7%
|
|
| 5 | 64 |
0.6%
|
|
| 6 | 7 |
0.1%
|
|
| 7 | 7+ | 2 |
0%
|
| 8 | don't know | 974 |
9.8%
|
| Sysmiss | 28741 |