When possible, information is displayed in a linear format not as a table
Avoid split cells, empty cells, merged cells, and embedded tables
Frames and iFrames have appropriate titles
In addition, don't use tables for layout, only for data
If you're using a table for layout, you should add role="presentation" to the table code, Don't use <caption> or <th> code because the system will think that this is a data table. You can just put the title above the table using regular <p></p> tags.