diff --git a/R/CompCasual-package.R b/R/CompCasual-package.R
index 3a320e5..7fe3f88 100644
--- a/R/CompCasual-package.R
+++ b/R/CompCasual-package.R
@@ -1,10 +1,5 @@
-#' CompCausal: Inferring causal effects in comprehensive cohort studies
+#' CompCausal
 #'
-#' This package provide R implementations of the estimation methods for 
-#' inferring causal effects in comprehensive cohort studies, 
-#' in the presence of unmeasured confounding and missing outcomes. The causal 
-#' effects include comprehensive cohort causal effects, randomized trial causal effects, 
-#' and patient preference causal effect. 
 #' @import utils
 #' @importFrom stats predict coef as.formula binomial dbeta dnorm integrate model.matrix nlminb optim optimize pnorm qnorm quantile sd uniroot var
 #' @importFrom betareg betareg
@@ -20,5 +15,6 @@
 #' @importFrom purrr map_dbl
 #' @importFrom Rcpp Module
 #' @import rlang
-#' @keywords Comprehensive cohort, Unmeasured confounding, Missing at random, Causal effect
+#' @keywords internal
+#' @noRd
 "_PACKAGE"
diff --git a/man/CompCausal-package.Rd b/man/CompCausal-package.Rd
deleted file mode 100644
index 06ffd45..0000000
--- a/man/CompCausal-package.Rd
+++ /dev/null
@@ -1,46 +0,0 @@
-% Generated by roxygen2: do not edit by hand
-% Please edit documentation in R/CompCasual-package.R
-\docType{package}
-\name{CompCausal-package}
-\alias{CompCausal}
-\alias{CompCausal-package}
-\title{CompCausal: Inferring causal effects in comprehensive cohort studies}
-\description{
-This package provide R implementations of the estimation methods for
-inferring causal effects in comprehensive cohort studies,
-in the presence of unmeasured confounding and missing outcomes. The causal
-effects include comprehensive cohort causal effects, randomized trial causal effects,
-and patient preference causal effect.
-}
-\seealso{
-Useful links:
-\itemize{
-  \item \url{https://github.com/UofUEpiBio/CompCausal}
-  \item \url{https://uofuepibio.github.io/CompCausal/}
-  \item Report bugs at \url{https://github.com/UofUEpiBio/CompCausal/issues}
-}
-
-}
-\author{
-\strong{Maintainer}: Jennifer Xu \email{jennifer.xu@hsc.utah.edu}
-
-Authors:
-\itemize{
-  \item Daniel Scharfstein \email{daniel.scharfstein@hsc.utah.edu} (\href{https://orcid.org/0000-0001-7482-9653}{ORCID}) [project director]
-}
-
-Other contributors:
-\itemize{
-  \item George Vega Yon \email{g.vegayon@gmail.com} (\href{https://orcid.org/0000-0002-3171-0844}{ORCID}) [contributor]
-}
-
-}
-\keyword{Causal}
-\keyword{Comprehensive}
-\keyword{Missing}
-\keyword{Unmeasured}
-\keyword{at}
-\keyword{cohort,}
-\keyword{confounding,}
-\keyword{effect}
-\keyword{random,}