Epidemiology and Data Analysis Notes

FIGURE 02.16: A scatter plot that demonstrates no relationship between age and weight.

FIGURE 02.17: A scatter plot that demonstrates a positive relationship between systolic and diastolic

blood pressure.

FIGURE 02.19: A dose-response curve.

Contingency Table

Used for case-control and cohort studies

Multivariate procedures

⚫ Used when there are multiple IVs or

multiple DVs

⚫ Most common is multiple regression.

This test is able to determine the most

useful predictor.

Multivariate analysis

⚫ Can the risk of heart disease be

predicted using smoking, exercise, diet

and heredity?

Parameter estimation

⚫ A point estimate is a single value used

to estimate a parameter, e.g. ̄ ≈ μ

⚫ Intervals can be used as well

⚫ Note: a parameter is a variable for

describing a characteristic if a

population. e.g. BMI, age

x

UNBOX 02.03: The 95% confidence interval (CI)

A CI estimate is a

range of values

that with a certain

degree of

probability contain

the population

parameter