POPH192 Lecture 28 - Confounding II Flashcards
1
Q
what is stratum?
A
levels of a confounder
2
Q
what is stratification?
A
calculating the measure of association for each stratum pf potential confounder ad comparing them
3
Q
what are the 3 steps to calculate stratification?
A
1) calculate the measure of association between exposure and outcome (odds ratio)
2) divide potential confounder into strata (levels)
3) for each stratum, calculate the measure of association between the exposure and outcome (i.e calculate the stratum-specific measures of association) calculate odds ratios for each
4) compare stratum-specific measures of association
4
Q
what is multivariable analysis?
A
statistical method for estimating measure of association whilst controlling for multiple potential confounders
