Biostatistics — Flashcards

Flashcard 181: _____ numbers of observations are a frequent source of bimodality, which makes their interpretation difficult.

Answer: Small (Large/Small)

Flashcard 182: Active life expectancy is also referred to as _____ index

Answer: Sullivan's

Flashcard 183: Values such as rank orders, or mild-moderate-severe represent _____ scale data

Answer: ordinal

Flashcard 184: The size of the squares (rectangles) in a Forest plot represents _____

Answer: Weight of the study

Flashcard 185: If the lateral corners of the diamond touches the vertical solid line, the overall result _____ statistically significant

Answer: is not (is/is not)

Flashcard 186: In a moderately skewed distribution, Mean = _____ (expressed using Median and Mode)

Answer: (3 Median - Mode) / 2

Extra: Empirical relationship in a moderately skewed distribution: Mode = 3 Median - 2 Mean

Flashcard 187: The forest plot is also referred to as _____

Answer: blobbogram

Flashcard 188: Calculating survival rate: (Total number of patients alive after 5 yrs /Total number of patients diagnosed or treated) x _____

Answer: 100

Flashcard 189: _____ that involves combining results from multiple studies on a given topic.

Answer: Meta-analysis

Flashcard 190: What is the first step of the Chi-square test?_____

Answer: State the null hypothesis