Convenient Plotting for the Modified Rankin Scale and Other Ordinal Outcome Data

Provides convenient tools for visualising ordinal outcome data following conventions within stroke research literature. It currently supports the "Grotta Bar" approach pioneered by The National Institute of Neurological Disorders and Stroke rt-PA Stroke Study Group (1995) and Probability-Probability plots for visualising Desirability of Outcome Ranking (DOOR) scales with large numbers of categories proposed by Johns et al. (2026) .


rankinPlot

Plotting functions for ordinal data in stroke including the modified Rankin Scale (mRS) and other ordinal data

Currently supports:

  • Grotta Bars

A Grotta bar chart is a common data visualisation tool in stroke research, and is in essence a horizontally stacked proportional bar chart showing the distribution of ordinal outcome data (typically the modified Rankin Scale) across groups, with lines drawn connecting categories across groups.

  • Probability-Probability Plots

A Probability-Probability plot visually shows all-to-all comparisons of outcomes between two groups and shows the proportion of such comparisons where the treatment group has a better outcome than the control group.

Reference manual

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install.packages("rankinPlot")

1.2.0 by Hannah Johns, 9 days ago


Browse source code at https://github.com/cran/rankinPlot


Authors: Hannah Johns [aut, cre] (ORCID: , Andreas Gammelgaard Damsbo [aut] (ORCID: , Florian van Leeuwen [aut] (ORCID:


Documentation:   PDF Manual  


GPL (>= 2.0) license


Imports ggplot2, scales, rlang, grDevices, RColorBrewer, lifecycle

Suggests viridis


Imported by stRoke.


See at CRAN