Thus, everyone who filled out the WebAIM survey did so by making a personal choice to do so, thus, we find a bias toward individuals who have a motivation to take the time to go to the web page containing the survey, fill in the information and hit the button to submit their entry to WebAIM. The first problem with the WebAIM survey is that it is a survey of voluntary subjects. I want readers to understand that, while the WebAIM numbers are the best information we have, the survey methods they use introduce biases into the data and, as far as I can tell, the WebAIM techniques make it difficult or impossible to publish important statistics like “margin of error” and “standard deviation,” two numbers that would be incredibly useful to one analyzing the data. Problems With The WebAIM Surveyīefore I leap into the actual results published in the WebAIM survey, I wanted to illustrate some of the problems with this data and why any specific number in the WebAIM survey is dubious at best. I’m focussing exclusively on general purpose computers and will write a separate piece on the mobile computing results at some point in the future. This article takes a look at two of the important questions asked in the WebAIM survey, those that ask what screen reader one uses primarily and which they use commonly. As long as Freedom Scientific, AI Squared and other third party commercial vendors of these technologies, insist on keeping their sales figures secret, the WebAIM data is the best available to us and our entire community should be grateful to our friends at WebAIM for doing the work to bring this valuable information to us. I will highlight the problems with the survey in the next section but, because this information was gathered by the same people using the same methods from year to year, while any specific number in the WebAIM report should be viewed with a high degree of skepticism, the trend lines we can derive from looking at all six of the reports in chronological order provides we professionals with the most useful data available. I love numbers and, while the WebAIM survey has some major flaws, it is by far the best data we have available to us regarding the questions it covers.
#Nvda screen reader market share full#
Recently, WebAIM published its “ Screen Reader Survey #6 Results and I found the information compelling.Īs a matter of full disclosure, I want to state up front that I find the nearly annual release of the WebAIM data to be one of the highlights of my yearly accessibility calendar. Since 2009, WebAIM, a consulting company with a focus on Internet accessibility, has published an approximately annual report detailing the results of a survey they conduct regarding screen reader marketshare and the preferences of screen reader users.
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