NFS284H1 Lecture Notes - Lecture 2: Prospective Cohort Study, Confounding, High High
28 May 2013
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Document Summary
1. 4 understanding science helps us understand nutrition: the scientific method: hypothesis, experiment to test hypothesis, results analyzed, conclusion: Hypothesis supported or hypothesis rejected: publication of results in a peer-reviewed scientific journal, publication sparks interest and more experiments are conducted to test hypothesis, reproducibility strengthens the hypothesis. Determines an association or correlation between diet and health (some aspect) Eg. high intake saturated fats associated w/ cvd. Determines causation (or establishes a causal link) between diet and health) Eg. association of birth rate and number of tvs but no causal link. Increase intake of dietary component: eg. intake of saturated fats increase, cvd increase, directions are the same. Increase intake of dietary component: eg. increase pufa, cvd decreases. Other factors that lead to diff confounding factors. Confounding factor: related to both the outcome being investigated (cancer cases) and a factor that might influence outcome (dietary intake)
