Adaptive sample size methods — Flashcards

Flashcard 1: Which type of observational study can be retro- or prospective? _____

Answer: Cohort study

Flashcard 2: The probability of making a type 1 error is represented by _____

Answer: alpha

Flashcard 3: A method of statistical analysis that pools summary data (ex. means, RRs) from multiple studies for a more precise estimate of the size of an effect is known as _____

Answer: meta-analysis

Flashcard 4: The statistical power of a study is calculated by _____

Answer: 1- beta

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

Answer: increased

Flashcard 6: A meta-analysis improves the strength of evidence and _____ of study findings

Answer: generalizability

Flashcard 7: What is the t-test used for? (biostatistics)

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

Flashcard 8: "β" with reference to statistical error

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

Flashcard 9: power (epidemiology)

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

Extra: power = (1-β)

Flashcard 10: What is the relationship between standard error of the mean and standard deviation?

Answer: SEM = SD / √n (Standard Error of the Mean = Standard Deviation / √Sample size)