Surrogate

Evaluation of Surrogate Endpoints in Clinical Trials

CRAN Package

In a clinical trial, it frequently occurs that the most credible outcome to evaluate the effectiveness of a new therapy (the true endpoint) is difficult to measure. In such a situation, it can be an effective strategy to replace the true endpoint by a (bio)marker that is easier to measure and that allows for a prediction of the treatment effect on the true endpoint (a surrogate endpoint). The package 'Surrogate' allows for an evaluation of the appropriateness of a candidate surrogate endpoint based on the meta-analytic, information-theoretic, and causal-inference frameworks. Part of this software has been developed using funding provided from the European Union's Seventh Framework Programme for research, technological development and demonstration (Grant Agreement no 602552), the Special Research Fund (BOF) of Hasselt University (BOF-number: BOF2OCPO3), GlaxoSmithKline Biologicals, Baekeland Mandaat (HBC.2022.0145), and Johnson & Johnson Innovative Medicine.


Documentation


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Insights

Last 30 days

This package has been downloaded 744 times in the last 30 days. Not bad! The download count is somewhere between 'small-town buzz' and 'moderate academic conference'. The following heatmap shows the distribution of downloads per day. Yesterday, it was downloaded 11 times.

Sun
Mon
Tue
Wed
Thu
Fri
Sat
0 downloadsMar 2, 2025
12 downloadsMar 3, 2025
14 downloadsMar 4, 2025
126 downloadsMar 5, 2025
7 downloadsMar 6, 2025
7 downloadsMar 7, 2025
17 downloadsMar 8, 2025
2 downloadsMar 9, 2025
5 downloadsMar 10, 2025
44 downloadsMar 11, 2025
22 downloadsMar 12, 2025
11 downloadsMar 13, 2025
9 downloadsMar 14, 2025
127 downloadsMar 15, 2025
2 downloadsMar 16, 2025
2 downloadsMar 17, 2025
8 downloadsMar 18, 2025
2 downloadsMar 19, 2025
9 downloadsMar 20, 2025
19 downloadsMar 21, 2025
18 downloadsMar 22, 2025
84 downloadsMar 23, 2025
21 downloadsMar 24, 2025
5 downloadsMar 25, 2025
3 downloadsMar 26, 2025
12 downloadsMar 27, 2025
140 downloadsMar 28, 2025
0 downloadsMar 29, 2025
3 downloadsMar 30, 2025
2 downloadsMar 31, 2025
11 downloadsApr 1, 2025
0 downloadsApr 2, 2025
0 downloadsApr 3, 2025
0 downloadsApr 4, 2025
0 downloadsApr 5, 2025
0
140

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Last 365 days

This package has been downloaded 13,110 times in the last 365 days. The downloads are officially high enough to crash an underfunded departmental server. Quite an accomplishment! The day with the most downloads was Feb 12, 2025 with 218 downloads.

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Data provided by CRAN


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Dependencies

  • Imports22 packages
  • Suggests12 packages