Histogram of the Propensity Score Object — prop_scr

Plot overlapping histograms of the propensity scores for both the internal and external participants, or plot external IPWs.

prop_scr_hist(
  x,
  variable = c("propensity score", "ps", "inverse probability weight", "ipw"),
  ...
)

Arguments

x: Propensity score object
variable: Variable to plot. It must be either a propensity score ("ps" or "propensity score") or inverse probability weight ("ipw" or "inverse probability weight")
...: Optional arguments for geom_histogram

Value

ggplot object

Examples

library(dplyr)
ps_obj <- calc_prop_scr(internal_df = filter(int_norm_df, trt == 0),
                       external_df = ex_norm_df,
                       id_col = subjid,
                       model = ~ cov1 + cov2 + cov3 + cov4)
# Plotting the Propensity Scores
prop_scr_hist(ps_obj)

# Or plotting the inverse probability weights
prop_scr_hist(ps_obj, variable = "ipw")