        .attr("text-anchor", "end")
        .attr("dominant-baseline", "middle")
 
-  # white box above to smother overlap
-  svg.append("rect")
-     .attr("x", 0)
-     .attr("y", 0)
-     .attr("width", w)
-     .attr("height", pad.top)
-     .attr("stroke", "none")
-     .attr("fill", "white")
-
   # box around the outside
   svg.append("rect")
      .attr("x", pad.left)

              else
                grp4BkgdHist.select("path##{data.ind[d]}").remove()

  # white box above to smother overlap
  lowsvg.append("rect")
     .attr("x", 0)
     .attr("y", 0)
     .attr("width", w)
     .attr("height", pad.top)
     .attr("stroke", "none")
     .attr("fill", "white")

  # white box to left smother overlap
  lowsvg.append("rect")
     .attr("x", 0)
     .attr("y", 0)
     .attr("width", pad.left)
     .attr("height", h)
     .attr("stroke", "none")
     .attr("fill", "white")

  # box around the outside
  lowsvg.append("rect")
     .attr("x", pad.left)

     .attr("stroke-width", 2)
     .attr("fill", "none")

  svg.append("text")
     .text("Outcome")
     .attr("x", pad.left*0.2)
