Reproducibility and validity of a self-administered food frequency questionnaire used in the JACC study.

@article{Date2005ReproducibilityAV,
  title={Reproducibility and validity of a self-administered food frequency questionnaire used in the JACC study.},
  author={Chigusa Date and Mitsuru Fukui and Akio Yamamoto and Kenji Wakai and Azusa Ozeki and Yutaka Motohashi and Chieko Adachi and Naoyuki Okamoto and Michiko Kurosawa and Yuko Tokudome and Yoko Kurisu and Yoshiyuki Watanabe and Kotaro Ozasa and Shuichi Nakagawa and Noritaka Tokui and Takesumi Yoshimura and Akiko Tamakoshi},
  journal={Journal of epidemiology},
  year={2005},
  volume={15 Suppl 1},
  pages={S9-23}
}
BACKGROUND A self-administered questionnaire on dietary habits used in the JACC Study contained a 40-item food frequency questionnaire (FFQ). Although more than 110 thousand subjects enrolled in JACC Study and responded to the FFQ, no validation study has been conducted to date. METHODS Eighty-five volunteers among the cohort members completed 2 FFQs (FFQs 1&2) and 12-day weighed dietary records (WDR). The interval between the two FFQs was one year. During the one year, the subjects carried… CONTINUE READING
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