Odds Ratio/Clicker questions Flashcards
What are examples of univariate statistics?
frequency mena, median, mode, standard deviation
What is a bivariate statistic?
relationship between 2 variables
chi-square, pearson’s correlation, t-test
WHat is a nominal data?
just measures a mere difference
like gender, male/female
yes/no
hometowns
What is an ordinal measure?
it’s difference plus rank order
What is an interval measure?
it measures differences, rank order and keeps equal distances between values of the variable
What is really the only interval measure we have?
IQ
What is a ratio measurement?
It’s like interval, but it has a true meaningful zero point
What’s another termf or continuous vs categorical?
quantitative vs. dichotomous
What’s the most common stat you’ll see for categorical outcomes?
chi-square
What do T tests compare?
means between two groups
What is an odds ratio?
it’s a measure of association between two variables (like an independent variable and a dependent variable)
it’s the odds that some outcome would occur in the presence of a predictor vs absence of a predictor
If an OR is equal to 1, what does that mean
the exposure does not affect odds of outcome
the predictor has no impact
If the OR is greater than 1, what does that mean?
exposure is associated wit higher odds of the outcome
What about if the OR is lower than 1?
exposure is associated with lower odds of the outcome
Specifically, an odds ratio of 1.67 means what?
women are 67% more likely than men to report sadness symptoms
