plot.logis_fe: Get funnel plot from a fitted 'logis_fe' object for...

In pprof: Modeling, Standardization and Testing for Provider Profiling

Get funnel plot from a fitted logis_fe object for institutional comparisons

Description

Creates a funnel plot from a logistic fixed effect model to compare provider performance.

Usage

## S3 method for class 'logis_fe'
plot(
  x,
  null = "median",
  test = "score",
  target = 1,
  alpha = 0.05,
  labels = c("lower", "expected", "higher"),
  point_colors = c("#E69F00", "#56B4E9", "#009E73"),
  point_shapes = c(15, 17, 19),
  point_size = 2,
  point_alpha = 0.8,
  line_size = 0.8,
  target_line_type = "longdash",
  ...
)

Arguments

x	a model fitted from logis_fe.
null	a character string or a number specifying null hypotheses of fixed provider effects. The default is "median".
test	a character string specifying the type of testing methods to be conducted. The default is "score".
target	a numeric value representing the target outcome. The default value is 1.
alpha	a number or a vector of significance levels. The default is 0.05.
labels	a vector of labels for the plot.
point_colors	a vector of colors representing different provider flags. The default is c("#E69F00", "#56B4E9", "#009E73").
point_shapes	a vector of shapes representing different provider flags. The default is c(15, 17, 19).
point_size	size of the points. The default is 2.
point_alpha	transparency level of the points. The default is 0.8.
line_size	size of all lines, including control limits and the target line. The default is 0.8.
target_line_type	line type for the target line. The default is "longdash".
...	additional arguments that can be passed to the function.

Details

This function generates a funnel plot from a logistic fixed-effect model. Currently, it only supports the indirect standardized ratio. The parameter alpha is a vector used to calculate control limits at different significance levels. The first value in the vector is used as the significance level for flagging each provider, utilizing the test.logis_fe function.

Value

A ggplot object representing the funnel plot.

References

Wu, W., Kuriakose, J. P., Weng, W., Burney, R. E., & He, K. (2023). Test-specific funnel plots for healthcare provider profiling leveraging individual- and summary-level information. Health Services and Outcomes Research Methodology, 23(1), 45-58.

See Also

logis_fe, SM_output.linear_re, test.logis_fe

Examples

data(ExampleDataBinary)
outcome <- ExampleDataBinary$Y
covar <- ExampleDataBinary$Z
ID <- ExampleDataBinary$ID
fit_fe <- logis_fe(Y = outcome, Z = covar, ID = ID)
plot(fit_fe)

pprof documentation built on April 12, 2025, 1:33 a.m.