Power for repeated measures designs — Flashcards

Flashcard 1: What statistical test is used to check differences between the means of THREE or more groups? _____

Answer: Analysis of variance (ANOVA)

Flashcard 2: The statistical power of a study is calculated by _____

Answer: 1- beta

Flashcard 3: _____ studies are observational studies that compare the frequency with which monozygotic and dizygotic twins develop the same disease

Answer: Twin concordance

Flashcard 4: What type of study design starts with cohort studies in which participants are followed over time, and participants who develop an outcome of interest become cases for a case-control study?_____

Answer: Nested case-control design

Flashcard 5: The power of a study is increased with _____ precision of measurement

Answer: increased

Flashcard 6: What is the t-test used for? (biostatistics)

Answer: Compare means of two groups. mnemonic: Mr. T is mean.

Flashcard 7: "β" with reference to statistical error

Answer: the probability of making a Type II statistical (false negative) error

Flashcard 8: power (epidemiology)

Answer: probability of detecting a differential effect if it is actually present

Extra: power = (1-β)

Flashcard 9: What is the relationship between standard error of the mean and standard deviation?

Answer:

Flashcard 10: In a normal distribution, how many data points fall within three standard deviations from the mean?

Answer: 99.7%