Often one needs to perform queries based on calculated fields of dates or number fields.
Examples:
- Difference between collection time and date of birth (age at collection)
- Difference between collection time and received time (warm ischemia time)
- Difference between frozen time and received time
- All specimens collected “today”, “last week” or “last month”
Learn how to do this using the OpenSpecimen query interface: https://openspecimen.atlassian.net/wiki/x/MwBLB
Thanks,
~Sri