compare_concordance

This Python package implements a statistical test for the comparison of correlated right-censored concordance indices. The code is derived entirely from the GPLv3-licensed R package compareC. Accordingly, this package is also licensed under GPLv3. If you use it in published work, you should cite the original authors' paper (see below).

Installation

This package can be installed via pip:

$ python3 -m pip install compare_concordance

Usage

from compare_concordance import compare_concordance

scores_1 = model1.predict(x)
scores_2 = model2.predict(x)

concordance_1, concordance2, difference, zscore, pvalue = compare_concordance(
    y['time'],
    y['status'],
    scores_1,
    scores_2
)

Citation

Kang L, Chen W, Petrick NA and Gallas BD (2015). "Comparing two correlated C indices with right-censored survival outcome: a one-shot nonparametric approach." Statistics in Medicine, 34(4), pp. 685-703. http://dx.doi.org/10.1002/sim.6370.

Bibtex

@Article{,
  title = {Comparing two correlated C indices with right-censored
    survival outcome: a one-shot nonparametric approach},
  author = {Le Kang and Weijie Chen and Nicholas A. Petrick and
    Brandon D. Gallas},
  year = {2015},
  volume = {34},
  number = {4},
  pages = {685-703},
  journal = {Statistics in Medicine},
  url = {http://dx.doi.org/10.1002/sim.6370},
}