title: Under- and overreporting of energy in a group of candidates for CABG surgery and its association with some anthropometric and sociodemographic factors, Tehran, Iran.
abstract: BACKGROUND
  Numerous studies have documented a high prevalence of misreporting energy intakes. This paper examines the prevalence of under- and overreporting of energy intake in a group of candidates for coronary artery bypass graft (CABG) surgery and its association with body mass index (BMI) and some sociodemographic factors.
  
  
  METHODS
  Dietary assessment (using a food frequency questionnaire) and demographic evaluation of 449 CABG surgery candidates was performed. Weight and height was also measured. McCrory equation was used to identify inaccurate records of energy intake. With this equation, reporting energy intake less than 78% and more than 122% of predicted energy expenditure was considered as under- and overreporting, respectively.
  
  
  RESULTS
  Less than half of the participants reported energy intakes within the plausible limits. There were more overreporters than underreporters in this sample. The only significant association between misreporting and related factors was seen in BMI groups. As BMI increased, the number of underreporters increased significantly. Expressed as a percentage of total energy, mean carbohydrate intake was significantly lower and mean fat and protein intake was significantly higher in underreporters compared to overreporters.
  
  
  CONCLUSIONS
  The high prevalence of misreporting suggests more research to examine the characteristics of misreporters. Calibrating data with these characteristics can help to improve intake estimates.
authors.affiliation: Nutrition Department, The Endocrinology and Metabolism Research Centre of Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Bahareh
authors.initials: B
authors.lastname: Amirkalali
authors.forename: Mehdi
authors.initials: M
authors.lastname: Najafi
authors.forename: Asal
authors.initials: A
authors.lastname: Ataie-Jafari
authors.forename: Saeed
authors.initials: S
authors.lastname: Hosseini
authors.forename: Ramin
authors.initials: R
authors.lastname: Heshmat
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015992:Body Mass Index; D001026:Coronary Artery Bypass; D015930:Diet Records; D002149:Energy Intake; D005260:Female; D006801:Humans; D007492:Iran; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires