qualCI is an R package for causal inference with qualitative and ordinal information on outcomes. It provides exact one-sided p-values and confidence intervals for an outcome variable defined on an interval measurement scale with only qualitative and ordinal information available.
qualCI requires R version 2.15.0 or higher.
install_packages("qualCI")require(devtools)
install_github("qualCI", user = "kkashin", ref = "master")GPL (>=2)