| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than half an hour | 150 |
14.7%
|
| 2 | Half hour to 24 hours | 326 |
31.9%
|
| 3 | More than 24 hours | 361 |
35.3%
|
| 4 | No severe chest pain | 91 |
8.9%
|
| 8 | Don't know | 95 |
9.3%
|
| 9 | 10 | ||
| Sysmiss | 3170 |