To add a table with a header row to a Word document: The 'Table Style Options' section of the ribbon on the Table Tools contextual tab lets you indicate that your data has a header row. The first involves making sure the table has a header row designated. There are multiple parts to the process of making a table accessible. You should also ensure the table has alternative text, to describe the contents of the table for those using screen readers. Be sure to designate a header row and use column headings to help describe the data in the table, as well as repeat the column headings on each page the table appears on. If necessary, split complex tables into multiple smaller tables.
When using tables in a Word document, keep them as simple as possible. You should only use a table when it's necessary to convey relationships between pieces of data, and not for layout purposes. This helps those using screen readers to make sense of the data contained in a table. In Microsoft Word, it is important to make sure all tables are accessible to those using screen readers.
