Form 5500 Research File User Guide 2005

This document is about the 2005 Form 5500 Pension Plan Research File, an annual edited database consisting of large private pension plans and a 5% sample of small plans. It explains the process for selecting plans, applying weights, editing the data, and adding variables not found on the Form 5500. The guide covers topics such as EFAST processing, plan weights, mega plans, data editing, and additional variables created for the 2005 file.