Form Labels within Tables

Does nesting of form elements within tables affect reporting of labels or other semantic information within form elements.

Labels Split from Checkboxes by Table Cell

Form with Fieldset and Checkboxes Embedded in Table

Test Table
Header One Header Two Header Three Header Four Header Five
Data One, Row Two Data Two, Row Two Data Three, Row Two Data Four, Row Two Data Five, Row Two
A Legend

Data One, Row Four Data Two, Row Four Data Three, Row Four Data Four, Row Four Data Five, Row Four

Form with Fieldset and Checkboxes, for Comparison

A Legend