diff --git a/NAMESPACE b/NAMESPACE
index ec359e5..d6b3da6 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -1,5 +1,6 @@
 # Generated by roxygen2: do not edit by hand
 
 export(metalite_table1)
+export(metalite_table1_to_df)
 export(metalite_table1_to_html)
 export(metalite_table1_to_rtf)
diff --git a/man/metalite_table1.Rd b/man/metalite_table1.Rd
index 943b373..8a760c8 100644
--- a/man/metalite_table1.Rd
+++ b/man/metalite_table1.Rd
@@ -7,7 +7,7 @@
 metalite_table1(
   formula,
   data,
-  id,
+  id = NULL,
   var_listing = NULL,
   total = TRUE,
   header = NULL,
diff --git a/man/metalite_table1_to_df.Rd b/man/metalite_table1_to_df.Rd
new file mode 100644
index 0000000..dd2e877
--- /dev/null
+++ b/man/metalite_table1_to_df.Rd
@@ -0,0 +1,18 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/metalite_table1.R
+\name{metalite_table1_to_df}
+\alias{metalite_table1_to_df}
+\title{Convert to data frame}
+\usage{
+metalite_table1_to_df(x)
+}
+\arguments{
+\item{x}{an output from \code{metalite_table1}.}
+}
+\value{
+a data frame that contain the table from the html output and
+a \code{.id} variable for variables.
+}
+\description{
+Convert to data frame
+}