how can ı find the interval between sample collection and last contact or death?
Created by Erdem Kölemen erdem.kolemen @erdem.kolemen to estimate the interval between sequencing and last contact/death, convert AGE\_AT\_SEQ\_REPORT (provided in years) to days (as an estimate) and subtract it from the interval fields:
```
interval (days) = INT_CONTACT − (AGE_AT_SEQ_REPORT × 365.25)
```
```
interval (days) = INT_DOD − (AGE_AT_SEQ_REPORT × 365.25)
```
Note: This is an approximation because AGE\_AT\_SEQ\_REPORT is rounded to whole years, so intervals may have ~±6 months uncertainty.