Study Design — Flashcards

Flashcard 111: Sampling bias is an example of _____ bias

Answer: selection

Extra:  https://onlinemeded.org/spa/epidemiology-and-stats/bias/acquire?ref=anki 

Flashcard 112: _____ occurs when the risk factor-disease relationship is obscured by an external variable associated with both the risk exposure and disease

Answer: Confounding

Extra:  https://onlinemeded.org/spa/epidemiology-and-stats/bias/acquire?ref=anki 

Flashcard 113: Subjects over/under report exposure history due to perceived social stigma = _____ bias

Answer: reporting

Extra:  https://onlinemeded.org?ref=anki 

Flashcard 114: Calculate the standard error: Variance = 100 n=25 _____

Answer: SE=sqrt (100/25)= 2

Extra: Watch associated Bootcamp video [https://app.bootcamp.com/med-school/biostatistics/videos/statistical-distributions?index=3] https://onlinemeded.org?ref=anki 

Flashcard 115: The _____ is a statistical test used to compare the difference between a continuous outcome variable of 1 predictor group(s) at 2 point(s) in time

Answer: paired two-sample t-test

Extra:  https://onlinemeded.org?ref=anki 

Flashcard 116: Breast/prostate cancer is the _____ most common cancer by mortality

Answer: 2nd

Flashcard 117: Lung cancer is the _____ most common cancer by incidence

Answer: 2nd

Flashcard 118: What equation is used to calculate allele frequency when using Hardy-Weinberg population genetics?_____

Answer: p + q = 1

Flashcard 119: For a chronic disease, how are prevalence and incidence related? _____

Answer: Prevalence > Incidence

Flashcard 120: Why does Generalizability bias matter? _____

Answer: Because patients in tertiary centers are usually highly selected