title: Reproducibility and validity of a semiquantitative food frequency questionnaire among military men.
abstract: OBJECTIVE
  A food frequency questionnaire (SFFQ) was developed to rank military men in tertiles of nutritional intake.
  
  
  METHODS
  validation study.
  
  
  METHODS
  95 military men. MRTHODS: two SFFQ's (SFFQ1 and SFFQ2) were collected with 2-week intervals. Four-day dietary records (4DDRs) were collected between the SFFQs.
  
  
  RESULTS
  the correlation coefficients for energy adjusted nutrients between SFFQ1 and SFFQ2 ranged between 0.42 (vitamin A) to 0.79 (total energy intake). The correlation coefficients between SFFQ1 and 4DDR ranged from 0.05 (vitamin A) to 0.50 (total energy intake). The correlation coefficients between SFFQ2 and 4DDR ranged from 0.01 (vitamin A) to 0.52 (total energy intake). The percentage of individuals classified in the same tertile comparing SFFQ1 and 4DDR ranged from 33.7% (vitamin A) to 52.6% (total alcohol intake).
  
  
  CONCLUSIONS
  our SFFQ has a good reproducibility and an acceptable validity to rank individuals according to dietary intake.
authors.affiliation: Department of Nutrition Preventive Medicine, Catholic University, Leuven University Hospital Gasthuisberg, Herestraat 49 B-3000 Leuven, Belgium.
authors.forename: Patrick
authors.initials: P
authors.lastname: Mullie
authors.forename: Peter
authors.initials: P
authors.lastname: Clarys
authors.forename: Mieke
authors.initials: M
authors.lastname: Hulens
authors.forename: Greet
authors.initials: G
authors.lastname: Vansant
mesh_terms: D000328:Adult; D001530:Belgium; D005247:Feeding Behavior; D006801:Humans; D008297:Male; D008887:Military Medicine / Q000706:statistics & numerical data*; D008889:Military Personnel / Q000706:statistics & numerical data*; D009749:Nutrition Surveys; D009752:Nutritional Status; D015203:Reproducibility of Results; D012737:Sex Factors; D013223:Statistics as Topic; D011795:Surveys and Questionnaires