set_survey(namcs2019sv, mode = "nchs")
## total() |> restructure()
restructure( total() )
## tab_subset("MAJOR", "AGER") |> restructure(lvls = c("Pre-surgery", "Post-surgery"))
mytables = tab_subset("MAJOR", "AGER")
restructure(mytables, lvls = c("Pre-surgery", "Post-surgery"))
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