Data Sources on Older Americans (DSOA) highlights the contents of government-sponsored surveys and products containing statistical information about the older population. All Federal agencies are invited to contribute to this report and participate in the Forum. Starting in 2009, DSOA includes some non-federal data sources. T he Federal Interagency Forum on Aging-Related Statistics, National Center for Health Statistics
D. Lai, T. King, L. Moyé, and Q. Wei. Annals of epidemiology, 13 (3):
204-8(March 2003)3153<m:linebreak></m:linebreak>Sample size; Surrogate endpoints; Dades longitudinals.