- Cohort profile: The Adventist Health Study-2 (AHS-2)Terry L Butler
School of Public Health, Loma Linda University, Loma Linda, California 9235, USA
Int J Epidemiol 37:260-5. 2008
- Missing data in a long food frequency questionnaire: are imputed zeroes correct?Gary E Fraser
Department of Epidemiology and Biostatistics, Loma Linda University, Loma Linda, CA, USA
Epidemiology 20:289-94. 2009..Missing data are a common problem in nutritional epidemiology. Little is known of the characteristics of these missing data, which makes it difficult to conduct appropriate imputation...
- Recruiting blacks to the Adventist health study: Do follow-up phone calls increase response rates?La Shawnta Bell
Loma Linda University School of Public Health, Loma Linda, CA 92350, USA
Ann Epidemiol 15:667-72. 2005..To determine whether follow-up phone calls improve response rates to a long questionnaire among black and white subjects...