Create summariseConceptCounts()

[martaalcalde]

• Stratify by age and sex

[catalamarti]

discuss differences with summariseCodeUse if any. options:

• reexport summariseCodeUse
• move summariseCodeUse to omopSketch
• include in a vignette summariseCodeUse

Do we want to stratify by year and age/sex at the same time?

[martaalcalde]

(Please @catalamarti confirm)

Decided with Marti that we would proceed as:

• copy summariseCodeUse() from CodelistGenerator package

summariseCodeUse(
  x,
  cdm,
  CountBy = c("record", "person"),
  byConcept = TRUE,
  byYear = FALSE,
  bySex = FALSE,
  ageGroup = NULL
)

• if x is not specified, all the codes in the concept table are summarised
• modify the arguments so they fit the standard of omopSketch
• Currently, the previous function doesn't allow for multiple strata at the same time (i.e., if you stratify by sex and year, it is stratified as women & overall, male & overall, overall & 1997, etc -> change it so strata is mixed

Once this is done, we will proceed with issue #70