In 2001 the first Supplemental Survey (SS) was conducted using the panel of the sample households selected for the 1999/2000 Post-Harvest Survey (PHS). All of the sample households in the PHS 99/00 that were found in the sample standard enumeration areas (SEAs) in 2001 were included in the sample for this first SS. The SS04 and SS08 followed this same panel of sample households three and seven years later to provide additional longitudinal data for these households. The main objective of the SS was to provide longitudinal data for the sample households in the panel that can be used to study micro-level changes in agricultural practices and socio-economic characteristics over time. The correlation in the sample data between each SS and the PHS 99/00 will improve the precision of the estimates of trends over time for relative indicators such means and proportions.