Number_Table: Internal Function
In moritzlindner/metaplot: Convenient plotting of meta-analysis data

This function creates a six column table of the format "median ( LCI - UCI )". Called by Forest_Plot

Number_Table(
  source_tbl,
  study,
  group_var = NULL,
  median = "sens",
  lci = "sens.ci.lower",
  uci = "sens.ci.upper",
  round_digits = 2
)

`source_tbl`	Dataframe containing the meta-analysis data
`study`	Index column for unique study identifier e.g. "Obelix 50 B.c."
`group_var`	Column to group by
`median`	Median
`lci`	Lower boundary of confidence interval
`uci`	Upper boundary of confidence interval
`round_digits`	Number of decimal places to display