| Value | Category |
|---|---|
| 1 | A few days or less |
| 2 | Less than 1 month but more than a few days |
| 3 | More than 1 month but less than 1 year |
| 4 | More than 1 year but less than for life |
| 5 | For life |
| 6 | Until they feel better |
| 8 | Don't know |
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