Composite Estimation for SIPP - A Preliminary Report has identified the types of composite estimators that can be used in SIPP to improve the reliability of estimates, particularly quarterly estimates. The quarterly reports, Economic Characteristics of Households in the United States, were published for the four quarters of 1984. At present, publication of quarterly reports has been discontinued primarily because economic characteristics of households and persons do not appear to change significantly from quarter to quarter. Annual reports on the economic characteristics of households in the United States are expected to be published in the future. In view of this publication plan, research on the composite estimation for SIPP annual reports was undertaken. This report summarizes results of this research and recommends the composite estimator to be used for SIPP annual reports.