Table 4.

Summary Statistics for State-to-State Elderly Migration Flows, by Data Source and Year: R² from migration flow regressions, by age group, data source, and model specification.

		Elderly		Nonelderly
		Census	IPUMS	Census	IPUMS
1	Flow and year fixed effects (equation 1)	.9292	.8945	.9691	.9492
2	Add origin and destination populations	.9379	.9025	.9740	.9538
3	Add origin and destination populations plus other age group migration flows	.9408	.9048	.9768	.9683

Note: R² indicates the proportion of variation in migration flows that has not changed over time.