diff --git a/Project.toml b/Project.toml
index 2f306fa..386377f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "TableOne"
 uuid = "d36ae967-72a8-4ff4-a661-f51e671fe83a"
 authors = ["Mark Pritchard <mark.pritchard@ndm.ox.ac.uk>"]
-version = "0.2.0"
+version = "0.2.1"
 
 [deps]
 DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
diff --git a/src/TableOne.jl b/src/TableOne.jl
index c61d616..89abbc4 100644
--- a/src/TableOne.jl
+++ b/src/TableOne.jl
@@ -581,14 +581,19 @@ function _getvarname(var, varnames::Dict)
 end
 
 function _addnmissing!(_t, varvect, strataids)
-    idmissing = findall(ismissing, varvect)
-    vectorcountmissing = findall(x -> x ∈ idmissing, strataids[:Total])
-    n = length(vectorcountmissing)
+    n = _countmissing(varvect)
     nmissing = [ "" for _ ∈ axes(_t, 1) ]
     nmissing[1] = sprint(show, n)
     insertcols!(_t, :nmissing => nmissing)
 end
 
+function _countmissing(varvect, sn=:Total)
+    idmissing = findall(ismissing, varvect)
+    vectorcountmissing = findall(x -> x ∈ idmissing, strataids[Symbol(sn)])
+    n = length(vectorcountmissing)
+    return n 
+end
+
 _binvariabledisplay(v, varvect, binvardisplay::Nothing) = maximum(skipmissing(unique(varvect)))
 
 function _binvariabledisplay(v, varvect, binvardisplay::Dict)