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Expected timezone for date fields

Hi Folks

What should be the timezone for date/time fields? I’m guessing the timezone of where dat were collected, but I couldn’t find that anywhere in the documentation.

This probably have some impact when working with multiple-timezones sites in the same omop database.



If you are using one EHR, just use the data in it. If you are doing a federated OMOP load, choose a standard and use it everywhere. In many of the tables, DateTimes are optional anyway and only dates are required.

For studies such as drug interactions, this is less than optimal, but it is what it is.