crt2power: Designing Cluster-Randomized Trials with Two Continuous
Co-Primary Outcomes
Provides methods for powering cluster-randomized trials with two continuous co-primary outcomes using five key design techniques. Includes functions for calculating required sample size and statistical power. For more details on methodology, see Owen et al. (2025) <doi:10.1002/sim.70015>, Yang et al. (2022) <doi:10.1111/biom.13692>, Pocock et al. (1987) <doi:10.2307/2531989>, Vickerstaff et al. (2019) <doi:10.1186/s12874-019-0754-4>, and Li et al. (2020) <doi:10.1111/biom.13212>.
| Version: | 
1.2.1 | 
| Depends: | 
R (≥ 4.3) | 
| Imports: | 
devtools (≥ 2.4.5), knitr (≥ 1.43), rootSolve (≥ 1.8.2.3), tidyverse (≥ 2.0.0), tableone (≥ 0.13.2), foreach (≥ 1.5.2), mvtnorm (≥ 1.2), tibble (≥ 3.2.1), dplyr (≥ 1.1.4), tidyr (≥ 1.3.0), stats (≥ 3.6.2) | 
| Suggests: | 
testthat (≥ 3.0.0) | 
| Published: | 
2025-05-07 | 
| DOI: | 
10.32614/CRAN.package.crt2power | 
| Author: | 
Melody Owen [aut, cre] | 
| Maintainer: | 
Melody Owen  <melody.owen at yale.edu> | 
| License: | 
GPL-3 | 
| URL: | 
https://github.com/melodyaowen/crt2power | 
| NeedsCompilation: | 
no | 
| Materials: | 
README  | 
| CRAN checks: | 
crt2power results | 
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