Thanks for the fix.

DenisChenu wrote: OK, fixed.

Some question :

• Trying to use role="radiogroup" in arry by columns where radiogroup are on col tag : Test link . An advice here ?

Many things going on with this type of question.
The question is in the column header and the response choices are in the row headers wich is not like natural tabulation order.
There is no html structure to rely on when using radiogroup. The opposite (type f), question in the row header and response choice in the columns header, is easier beacause you can use radiogroup on each <td>. Because this type of question (H) does not function like native table read order (left to right), I would not use it at all. I would use type F instead.

I do not see a way to use this type of question with a screen reader without repeating the question for each response.
Things I would change.
1. Radiogroup sould not be used in <colgroup>. W3C state explicitly that colgroup is used for formating www.w3schools.com/tags/tag_colgroup.asp . radiogroup is a semantic attrribute.
2. The hidden label for each radio button repeat the question. I would use aria-labelledby on the input instead and pointing to : First the question and second the response (aria-labelledby="id_column_header id_row_header »)
3. I would drop the title attribute on <td>

Example in file attached