prcr
is an R
package for person-centered analysis. Person-centered analyses focus on clusters, or profiles, of observations, and their change over time or differences across factors. See Bergman and El-Khouri (1999) for a description of the analytic approach. See Corpus and Wormington (2014) for an example of person-centered analysis in psychology and education.
You can install the development version of prcr
(v. 0.2.0
) from Github with:
# install.packages("devtools")
devtools::install_github("jrosen48/prcr")
This version takes a “data-first” approach different from the object-oriented approach used in the version on CRAN. Because of this, Please note that there presently exists a significant gap in the user interface between the CRAN version available through install.packages("prcr")
and the in-development version available through GitHub. This should be addressed shortly in the next CRAN update.
You can install prcr
from CRAN (v. 0.1.5
) with:
install.packages("prcr")
This is a basic example using the built-in dataset pisaUSA15
:
library(prcr)
df <- pisaUSA15
m3 <- create_profiles_cluster(df, broad_interest, enjoyment, instrumental_mot, self_efficacy, n_profiles = 3)
#> Prepared data: Removed 354 incomplete cases
#> Hierarchical clustering carried out on: 5358 cases
#> K-means algorithm converged: 5 iterations
#> Clustered data: Using a 3 cluster solution
#> Calculated statistics: R-squared = 0.424
plot_profiles(m3, to_center = T)
#> Warning: attributes are not identical across measure variables;
#> they will be dropped
Other functions include those for carrying out comparing r-squared values and perfomring cross-validation. These are documented in both the manual and vignette for the CRAN release and their versions in the in-development version will be documented prior to the CRAN release.
See examples of use of prcr
in the vignettes.
Please note that this project is released with a Contributor Code of Conduct available here
This package is being developed along with its sister project, tidyLPA
, which makes it easy to carry out Latent Profile Analysis by providing an interface to the MCLUST package. More information about tidyLPA
is available here.