On seven of the thirteen UW campuses, the vast majority of accessibility errors (within the library data sets) pertained to the lack of alternative text for images. The highest percentages were found at the UW-Parkside (100%), UW-River Falls (100%), and UW-Milwaukee (93%). The proportion of this type of error were lowest among the library web pages at the La Crosse (14%), Madison (21%) and Oshkosh (30%) campuses.

For most of the UW campuses, second in relative frequency was the lack of alternative text for hot spots on client-side image maps.  This type of error occurred the most frequently at the UW-La Crosse (86%), UW-Madison (52%), and UW-Whitewater (47%). It did not occur at all among the library pages at the UW-Milwaukee, UW-Parkside, and UW-River Falls.

These two types of accessibility errors, the lack of alternative text for images and for image-map hot spots, constituted over 90% of the "high-priority" errors identified by Bobby at ten of the thirteen UW campuses. Some campuses stood out for their relatively high proportion of library pages in which frames were not provided with titles:   UW-Oshosh (13%), UW-Madison (12%), UW-Eau Claire (10%), and UW-Whitewater (8%). The UW-Madison also stood out for an exceptionally high proportion (9%) of the following error: frame without referenced html file.

For other campus-specific figures, please contact the author.