| Value | Category | Cases | |
|---|---|---|---|
| 0 | Undefined | 48 |
0.8%
|
| 1 | General | 743 |
12.6%
|
| 2 | Spinal block | 5036 |
85.1%
|
| 3 | Nerve block | 10 |
0.2%
|
| 4 | Local | 75 |
1.3%
|
| 9 | Unknown | 5 |
0.1%
|
| Sysmiss | 86146 |