Cohort studies — Flashcards

Flashcard 21: _____ studies are useful for calculating relative risk (RR)

Answer: Cohort

Flashcard 22: An incidence density rate (IDR) measures the _____ of disease occurrence in a population.

Answer: Instantaneous rate (velocity)

Flashcard 23: A survival cohort describes the past history of _____, and thus introduces bias into the results (this is seen in Retrospective Case Series)

Answer: prevalent cases

Flashcard 24: Excluding skin cancer, which demographic (Men, Women, or Children) has **Leukemia**, **Brain/CNS tumors**, and **Lymphoma** as the three most common cancers by incidence in the United States?

Answer: Children (age 0-14)

Extra: Top 3 cancer **incidence** in the US (excluding skin cancer): - **Men:** Prostate, Lung, Colorectal - **Women:** Breast, Lung, Colorectal - **Children:** Leukemia, Brain/CNS tumors, Lymphoma Note: **Lung cancer** is the #1 cause of cancer **mortality** in both men and women.

Flashcard 25: Are cohort studies useful for measuring incidence and/or prevalence? _____

Answer: Incidence

Flashcard 26: If relative risk _____ 1, exposure is associated with decreased disease occurence

Answer: <