Validity and systematic error in measuring carotenoid consumption with dietary self-report instruments.

@article{Natarajan2006ValidityAS,
  title={Validity and systematic error in measuring carotenoid consumption with dietary self-report instruments.},
  author={Loki Natarajan and Shirley W. Flatt and Xiaoyan Sun and Anthony Collins Gamst and Jacqueline M Major and Cheryl L Rock and Wael A Al-Delaimy and Cynthia A Thomson and Vicky A. Newman and John P Pierce},
  journal={American journal of epidemiology},
  year={2006},
  volume={163 8},
  pages={770-8}
}
Vegetables and fruits are rich in carotenoids, a group of compounds thought to protect against cancer. Studies of diet-disease associations need valid and reliable instruments for measuring dietary intake. The authors present a measurement error model to estimate the validity (defined as correlation between self-reported intake and "true" intake), systematic error, and reliability of two self-report dietary assessment methods. Carotenoid exposure is measured by repeated 24-hour recalls, a food… CONTINUE READING

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