Constructing rtables Manually

Overview

The main functions currently associated with rtables are

Tables in rtables can be constructed via the layout or rtabulate tabulation frameworks or also manually. Currently manual table construction is the only way to define column spans. The main functions for manual table constructions are:

• rtable(): collection of rrow() objects, column header and default format
• rrow(): collection of rcell() objects and default format
• rcell(): collection of data objects and cell format

Simple Example

library(rtables)

manual_table_construction.R

tbl <- rtable(
  header = c("Treatement\nN=100", "Comparison\nN=300"),
  format = "xx (xx.xx%)",
  rrow("A", c(104, .2), c(100, .4)),
  rrow("B", c(23, .4), c(43, .5)),
  rrow(),
  rrow("this is a very long section header"),
  rrow("estimate", rcell(55.23, "xx.xx", colspan = 2)),
  rrow("95% CI", indent = 1, rcell(c(44.8, 67.4), format = "(xx.x, xx.x)", colspan = 2))
)

manual_table_construction.R

Before we go into explaining the individual components used to create this table we continue with the html conversion of the rtable() object:

as_html(tbl, width = "80%")

manual_table_construction.R

Next, the [ operator lets you access the cell content.

tbl[1, 1]

#      Treatement 
#        N=100    
# ————————————————
# A   104 (20.00%)

manual_table_construction.R

and to format that cell run format_rcell(tbl[1,1])=.

Note that tbl[6, 1] and tbl[6, 2] display both the same rcell because of the colspan.