The Centers for Disease Control and Prevention's Healthy Days Measures – Population tracking of perceived physical and mental health over time

by Kobau Rosemarie, Zack Mathew M, Moriarty David G
Published 2003-09-01

Sad, blue, or depressed days, health behaviors and health-related quality of life, Behavioral Risk Factor Surveillance System, 1995–2000

by Chapman Daniel, Moriarty David G, Safran Marc A, Zack Matthew M, Kobau Rosemarie
Published 2004-07-01