title: Calorie intake misreporting by diet record and food frequency questionnaire compared to doubly labeled water among postmenopausal women.
abstract: OBJECTIVE
  We assessed the extent of energy misreporting from the use of a self-administered 7-day diet record (7-DDR) and a widely used food frequency questionnaire (FFQ) compared to total energy expenditure from doubly labeled water (DLW) in a group of postmenopausal women.
  
  
  METHODS
  At baseline, 65 healthy postmenopausal women were instructed to fill out the National Cancer Institute's (NCI) FFQ and a 7-DDR. Average total energy expenditure using the DLW method was also performed at baseline.
  
  
  RESULTS
  On average, the women underestimated total energy intake compared to total energy expenditure assessed from DLW by 37% on the 7-DDR and 42% on the FFQ.
  
  
  CONCLUSIONS
  These findings suggest that the interpretation of findings from the 7-DDR- and FFQ-based energy-disease association studies in postmenopausal women needs further evaluation.
  
  
  BACKGROUND
  This research was supported (in part) by the Intramural Program of the NIH (National Cancer Institute).
authors.affiliation: Department of Epidemiology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA. smahabir@mdanderson.org
authors.forename: S
authors.initials: S
authors.lastname: Mahabir
authors.forename: D J
authors.initials: DJ
authors.lastname: Baer
authors.forename: C
authors.initials: C
authors.lastname: Giffen
authors.forename: A
authors.initials: A
authors.lastname: Subar
authors.forename: W
authors.initials: W
authors.lastname: Campbell
authors.forename: T J
authors.initials: TJ
authors.lastname: Hartman
authors.forename: B
authors.initials: B
authors.lastname: Clevidence
authors.forename: D
authors.initials: D
authors.lastname: Albanes
authors.forename: P R
authors.initials: PR
authors.lastname: Taylor
mesh_terms: D000368:Aged; D001834:Body Water / Q000378:metabolism*; D003430:Cross-Sectional Studies; D015930:Diet Records; D002149:Energy Intake; D005260:Female; D006801:Humans; D008875:Middle Aged; D017698:Postmenopause; D012650:Self Disclosure; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires; D014930:Women / Q000523:psychology*