Open AccessMissing Data in a Long Food Frequency Questionnaire
Author(s) -
Gary E. Fraser,
Ru Yan,
Terry Butler,
Karen JaceldoSiegl,
W. Lawrence Beeson,
Jeremy Chan
Publication year - 2009
Publication title -
epidemiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.901
H-Index - 173
eISSN - 1531-5487
pISSN - 1044-3983
DOI - 10.1097/ede.0b013e31819642c4
Subject(s) - missing data , imputation (statistics) , statistics , cohort , mathematics , medicine , econometrics
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.