Hi Mike,
It really depends upon the size of the application, site or offering and
how much accessibility is addressed early, e.g. during unit testing.
One of our accessibility verification teams was auditing a 75,000 LOC web
application. They anticipated 200 accessibility violations from prior
experience. They did not break these down by Level A or AA. However, since
the developer ran automated scans during unit test, they only found 18
issues. This is much closer to Alistairs numbers.
Moe
From: "Michael Gower" <michael.gower@ca.ibm.com>
To: Alastair Campbell <acampbell@nomensa.com>
Cc: WCAG <w3c-wai-gl@w3.org>
Date: 01/10/2017 09:15 AM
Subject: Research on frequency and severity of failures
Alastair wrote:In a typical audit we usually get 10-14 level-A issues, 4-7
AA issues, is that the same for others?
When I was working on a model for accelerating accessibility, I had very
similar questions not only about the relevance of WCAG levels, but the
nature, frequency, severity and remediation efforts for accessibility
issues. I've identified this as a research opportunity, as I did not find
much useful data. I'd welcome any references, data sources or
non-anecdotal findings on this topic.
Michael Gower