Allow interval = NULL, unitInterval = NULL in summariseConceptCounts when no stratification per unit interval of time wants to be performed

[martaalcalde]

What do you think, @catalamarti ?

[catalamarti]

Mmmm The more I think would be nice to align with IncidencePrevalence:
https://darwin-eu.github.io/IncidencePrevalence/reference/estimateIncidence.html

Then my suggestion would be two arguments:

• interval (overall/years/quarters/months/weeks/days) we can for the moment only allow
• intervalValue: by default 1, but can allow to change it

What do you think @martaalcalde
This would allow overall option (happy to include an option that if NULL -> overall)
Allow the value thingy
Align with IncidencePrevalence

[martaalcalde]

Change start of the database to the nearest multiple of five year

[martaalcalde]

Change it in:

• summariseRecordCount
• summariseConceptCount
• summariseInObservation