What is the main difference between a retrospective and prospective cohort study?


A retrospective cohort study examines previous data in an effort to look back in time to reconstruct exposures and health outcomes, whereas prospective cohort studies follow a group into the future.

Nutritional Science

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What is the leading federal agency in the United States that protects human health and safety?

A) Centers for Disease Control and Prevention (CDC) B) National Institutes of Health (NIH) C) American Dietetic Association (ADA) D) United States Department of Agriculture (USDA)

Nutritional Science

Lycopene, found in _____, may help reduce the risk of _____

a. bananas; high blood pressure b. summer squash; macular degeneration c. tomatoes; prostate cancer d. cruciferous vegetables; breast cancer e. citrus fruits; skin cancer

Nutritional Science

The Acceptable Macronutrient Distribution Ranges (AMDR) for the energy-yielding nutrients are generous. Describe the group of people who would benefit from the lower limits of each range—for carbohydrates, lipids, and proteins. Which groups of people would benefit from the higher limits of each range—for carbohydrates, fats, and proteins?

Nutritional Science

John is a 52-year-old factory worker. He has been admitted to the hospital and presents with muscle weakness and inflammation of his mouth. He is a bit confused and states that he isn't drinking now although he has a history of alcohol abuse. He has lost quite a bit of weight in the last six months, and his dietary intake has been poor. He was laid off a year ago but he is back to work part-time

Further testing has been ordered to determine the cause for concern and confirm the diagnosis. What food(s) would provide the most significant source of the vitamin missing in his diet? a. Dairy products b. Fish c. Legumes d. Pork

Nutritional Science