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twoCoprimary

Overview

twoCoprimary provides comprehensive tools for sample size and power calculation in clinical trials with two co-primary endpoints. In co-primary endpoint trials, treatment success requires demonstrating statistically significant effects on all primary endpoints simultaneously. This package implements state-of-the-art methodologies that properly account for correlation between endpoints, leading to more efficient trial designs.

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Install

install.packages('twoCoprimary')

Monthly Downloads

153

Version

1.0.0

License

MIT + file LICENSE

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Maintainer

Gosuke Homma

Last Published

November 21st, 2025

Functions in twoCoprimary (1.0.0)

power2MixedCountContinuous

Power Calculation for Two Co-Primary Endpoints (Count and Continuous)
dbibinom

Probability Mass Function of Bivariate Binomial Distribution
corrbound2MixedCountContinuous

Calculate Correlation Bounds Between Count and Continuous Outcomes
plot.twoCoprimary

Plot Method for twoCoprimary Objects
power2MixedContinuousBinary

Power Calculation for Two Co-Primary Mixed Endpoints
design_table

Create Design Comparison Table for Two Co-Primary Endpoints
power2Continuous

Power Calculation for Two Co-Primary Continuous Endpoints
power2BinaryExact

Exact Power Calculation for Two Co-Primary Binary Endpoints
corrbound2Binary

Calculate Correlation Bounds Between Two Binary Outcomes
power2BinaryApprox

Power Calculation for Two Co-Primary Binary Endpoints (Approximate)
ss1Continuous

Sample Size Calculation for a Single Continuous Endpoint
print.twoCoprimary_table

Print Method for twoCoprimary_table Objects
ss2BinaryApprox

Sample Size Calculation for Two Co-Primary Binary Endpoints (Asymptotic Approximation)
ss1Count

Sample Size Calculation for a Single Count Endpoint (Negative Binomial)
ss1BinaryApprox

Sample Size Calculation for a Single Binary Endpoint
ss2Continuous

Sample Size Calculation for Two Co-Primary Continuous Endpoints (Approximate)
rr1Binary

Rejection Region for Two-Arm Trials with a Single Binary Endpoint
print.twoCoprimary

Print Method for twoCoprimary Objects
ss2MixedContinuousBinary

Sample Size Calculation for Two Co-Primary Endpoints: One Continuous and One Binary
ss2MixedCountContinuous

Sample Size Calculation for Two Co-Primary Endpoints: One Count and One Continuous
ss2BinaryExact

Exact Sample Size Calculation for Two Co-Primary Binary Endpoints
twoCoprimary2BinaryApprox

Unified Interface for Two Co-Primary Binary Endpoints (Approximate Methods)
twoCoprimary2MixedContinuousBinary

Unified Interface for Mixed Continuous and Binary Co-Primary Endpoints
twoCoprimary2BinaryExact

Unified Interface for Two Co-Primary Binary Endpoints (Exact Methods)
twoCoprimary2Continuous

Unified Interface for Two Co-Primary Continuous Endpoints
twoCoprimary2MixedCountContinuous

Unified Interface for Mixed Count and Continuous Co-Primary Endpoints