Correlations between estimated and true dietary intakes: using two instrumental variables.

@article{Fraser2005CorrelationsBE,
  title={Correlations between estimated and true dietary intakes: using two instrumental variables.},
  author={Gary E Fraser and Terrence L Butler and David J Shavlik},
  journal={Annals of epidemiology},
  year={2005},
  volume={15 7},
  pages={509-18}
}
PURPOSE We describe a new application of the method of triads that allows an estimate of the correlation between a dietary questionnaire measure (Q) and true intake (T). METHODS Three surrogate variables Q, M, and P are observed where M and P are both instrumental (often biological) variables. A reference dietary method (R) is not required. The variables M and P may be concentration rather than recovery biomarkers. Estimating equations produce Corr(Q,T), Corr(M,T), Corr(P,T), conditional on… CONTINUE READING

From This Paper

Topics from this paper.

Citations

Publications citing this paper.
Showing 1-10 of 15 extracted citations

Research Strategies for Nutritional and Physical Activity Epidemiology and Cancer Prevention.

Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology • 2018
View 1 Excerpt

Similar Papers

Loading similar papers…