PAOH 3010 - Exam 2 - Hypothesis testing

research question is your___ in question form

hypothesis

what we assume to be true unless evidence suggests otherwise

null hypothesis

states that there is an effect or relationship between variables in the population

alternative hypothesis

study that measures variables of a group of people over time

cohort

A variable (such as age, test score, or height) that can take on a wide or infinite number of values.

continuous

places an individual into one of several groups or categories

categorical

when do you use relative risk

cohort study (prospective)

when do you use odds ratio

case-control study

RR=0

no association

when do you reject your null hypothesis

p-value is < 0.05

T/F: Larger sample size, more reliable study

true

what is the goal of hypothesis testing

to determine whether an association between an outcome and exposure is statistically significant

the sample statistic that is the most likely value of the population parameter calculated from sample data

point estimate

a range around a measurement used to convey how precise the point estimate is

confidence interval

factors that determine the confidence interval

sample size, population variability, level of confidence

what does it mean if a confidence interval is wide

small sample size

narrow confidence interval means what?

large sample size

if a confidence interval intersects the RR=1 threshold, is it significant?

no

T/F: statistical significance means that it is clinically significant

false