Can't find AAGE

[bms63]

Was searching around and could not find this in admiraldiscovery. Any chance we could make that available?

https://pharmaverse.github.io/admiral/reference/derive_vars_aage.html?q=derive_vars_duration#null

[ddsjoberg]

@bms63 do you know if this is variable is in any of the admiral templates?

[bms63]

@bundfussr and @manciniedoardo quick search doesn't have this variable in any of our templates, but we have a dedicated function for it. Should we add it to ADSL?

[manciniedoardo]

Happy to add to the ADSL template. pharmaverse/admiral#2774