nomogrammer: Fagan Nomogram Function

In sbalci/ClinicoPathJamoviModule: Analysis for Clinicopathological Research

Fagan Nomogram Function

Description

Create the Fagan nomogram for Bayesian analysis in diagnostic testing

Create the Fagan nomogram for Bayesian analysis in diagnostic testing

Usage

nomogrammer(
  Prevalence = 0.4,
  Sens = 0.9,
  Spec = 0.8,
  Plr = NULL,
  Nlr = NULL,
  Detail = TRUE,
  NullLine = TRUE,
  LabelSize = 2.8,
  Verbose = FALSE
)

nomogrammer(
  Prevalence = 0.4,
  Sens = 0.9,
  Spec = 0.8,
  Plr = NULL,
  Nlr = NULL,
  Detail = TRUE,
  NullLine = TRUE,
  LabelSize = 2.8,
  Verbose = FALSE
)

Arguments

Prevalence	Prior probability / prevalence
Sens	Sensitivity
Spec	Specificity
Plr	Positive likelihood ratio (calculated from Sens and Spec if not provided)
Nlr	Negative likelihood ratio (calculated from Sens and Spec if not provided)
Detail	Whether to show detailed statistics on the plot
NullLine	Whether to show the null effect line
LabelSize	Size of text labels
Verbose	Whether to print additional information

Value

A ggplot object with the Fagan nomogram

A plot object with the Fagan nomogram

Examples

# Using sensitivity and specificity
nomogrammer(Prevalence = 0.3, Sens = 0.9, Spec = 0.8)

# Using likelihood ratios
nomogrammer(Prevalence = 0.3, Plr = 4.5, Nlr = 0.125)

sbalci/ClinicoPathJamoviModule documentation built on June 13, 2025, 9:34 a.m.