Explores, in three papers by different authors, the difficulties in working with data based on different migration periods. One paper offers a proposal for overcoming those difficulties as well as for measuring repeat migration.

Another paper analyses the use of data from the Bureau's longitudinal Survey of Income and Program Participation. The final paper presents a multiple data source approach for estimating annual State-to-State migration flows. A detailed table presents estimates of the number of persons migrating between individual States from 1985 to 1986.

Comparing Migration Measures Having Different Intervals
By John F. Long and Celia G. Boertlein

This paper explores the difficulties inherent in working with data based on different migration intervals and offers a proposal for overcoming those difficulties as well as for measuring repeat migration.

Longitudinal Migration Data From the Survey of Income and Program Participation
By Diana DeAre

This paper addresses possibilities for migration analysis using data from the Census Bureau’s longitudinal Survey of Income and Program Participation.

Creating Annual State-to-State Migration Flows With Demographic Detail
By Signe I. Wetrogen and John F. Long

This paper discusses a multiple data source approach for estimating annual State—to—State migration flows.