Free-living dietary intake
Cancer
CANCER
Outpatient dietary intake was evaluated using the validated food frequency questionnaire, the Diet History Questionnaire II (Diet History Questionnaire, Version 2.0. National Institutes of Health, Epidemiology and Genomics Research Program, National Cancer Institute, 2010), on which patients self-reported the frequency and portion sizes of food items consumed over the past 12 months. Diet Calc software was used to estimate nutrients consumed based upon the United States Department of Agriculture food database (Diet*Calc Analysis Program, Version 1.5. National Cancer Institute, Applied Research Program).