| Value | Category | Cases | |
|---|---|---|---|
| 0 | received no injection | 1543 |
20.9%
|
| 1 | 3631 |
49.3%
|
|
| 2 | 1653 |
22.4%
|
|
| 3 | 367 |
5%
|
|
| 4 | 35 |
0.5%
|
|
| 5 | 53 |
0.7%
|
|
| 6 | 5 |
0.1%
|
|
| 7 | 7+ | 9 |
0.1%
|
| 8 | don't know | 76 |
1%
|
| Sysmiss | 31074 |