Introduction to Public Health with Kherailah Khodeda Quiz

Study Notes

What is Statistics?

Statistics involves collecting, analyzing, interpreting, and presenting data to gain insights and draw conclusions. It uses mathematical tools to understand patterns, trends, and relationships within data.

P-value:

In statistical hypothesis testing, a p-value represents the probability of obtaining results as extreme as the observed results if the null hypothesis is true.
A p-value of 0.05, commonly used as a threshold, indicates that there is a 5% chance of observing the results if there is truly no effect or difference.
This threshold is often used to reject the null hypothesis in favor of an alternative hypothesis.

Power of a Study:

The power of a study is its ability to detect a statistically significant result when there is a real effect.
Higher power means a lower chance of missing a true effect, called a Type II error.
Factors like sample size and effect size influence the power of a study.

Screening Tests:

Screening tests, such as mammograms for breast cancer and HIV tests, aim to detect the presence of a disease at an early stage when interventions may be more effective.
These tests are not diagnostic and may require further investigation to confirm a diagnosis.
The effectiveness of screening tests is measured by their sensitivity (ability to correctly identify cases) and specificity (ability to correctly identify non-cases).

Mortality and Birth Rates:

Mortality rates represent the number of deaths within a specific population during a given period.
Birth rates represent the number of live births within a specific population during a given period.
Both rates are important for understanding population health, demographic trends, and resource allocation.

Description

Test your knowledge on the basics of public health with this quiz covering topics such as statistics and probability. Gain insights into the fundamental concepts presented during the 4th session introduction to public health by Kherailah Khodeda.