{| class="wikitable" border="1"
|-valign="top"
! Ph.D. Programs by Number of Relevant Faculty
! Ph.D. Programs by Country
! Ph.D. Programs by State
|-valign="top"
| <categorytree mode=pages>1 Faculty</categorytree>
<categorytree mode=pages>2 Faculty</categorytree>
<categorytree mode=pages>Wisconsin</categorytree>
|-
| row 2, cell 1
| row 2, cell 2
| row 2, cell 3
|}
<categorytree mode=pages>1 Faculty</categorytree>
<categorytree mode=pages>2 Faculty</categorytree>
<categorytree mode=pages>3 Faculty</categorytree>
<categorytree mode=pages>4 Faculty</categorytree>
<categorytree mode=pages>5 Faculty</categorytree>
<categorytree mode=pages>6+ Faculty</categorytree>