Item Review Sheets produced using conquestr
In conquestr: An R Package to Extend 'ACER ConQuest'

# global options for all chunks
knitr::opts_chunk$set(echo = FALSE)

A number of libraries are required. This is becasue we will format some objects with our own R markdown.

# Required packages
library("conquestr")
library("kableExtra")

Item Review Sheets produced using RMarkdown

This is an example of implementation of Item Review Sheets using RMarkdown and conquestr. We will use the default system file, analysis, and plots from the conquestr library. First we can read in the system file (output by ACER ConQuest). Item analysis (itanal) and iteration history are stored in the system file.

# Read default system file
mySys <- ConQuestSys()

# Read itanal
mySys_itanal <- getCqItanal(mySys)

# Summary stats are alwasy the last element of the list returned by getCqItanal
SumStat <- mySys_itanal[[length(mySys_itanal)]]

# internal formatting of itanal
mySys_itanalFmt <- fmtCqItanal(mySys_itanal)

# iteration history
iter_hist <- getCqHist(mySys)

Output from plot files are stored separately in Rout files.

#generate a ICC/MCC plot from an 'ACER ConQuest' Rout file - traditional ICC/MCC plot
my_Rout <- ConQuestRout()

There are also helper functions to plot iteration history and Rout files.

# iteration history plot of item parameters 
iter_hist_plot <- plotCqHist(iter_hist, centre = FALSE, legend = TRUE, params = "Xsi")
# ICC plot
my_Rout_plot <- plotRout(my_Rout)

Test Summary Information

Summary Statistics:

SumStat %>%
  kbl(digits = 2) %>% # could set digits as a global option
  kable_styling()

Visual summary of convergence

plot(iter_hist_plot)

Item 1 Summary

Item 1 Statistics:

#Item 1 name only
mySys_itanal[[1]]$name %>%
  kbl() %>%
  kable_styling()

#Item 1 table only
mySys_itanal[[1]]$table %>%
  kbl(digits = 2) %>%
  kable_styling()

#Item 1 item corrs only
mySys_itanal[[1]]$item_rest_total %>%
  kbl(digits = 2) %>%
  kable_styling()