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Chapter 1

Measuring disease occurrence

In this chapter, we'll cover the basics such as calculating incidence rates, prevalence, and mortality. We'll also explain the concept of age confounding and teach you what to do about it.
6 Lessons
18:08 min
Measuring disease occurrence intro
0:29 min
Calculating incidence and prevalence
6:13 min
Mastering mortality rates
6:04 min
Identifying age as a confounding variable
2:55 min
Controlling for age: stratification or adjustment
2:27 min
Measuring disease occurrence quiz
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Chapter 2

Assessing the validity of diagnostic tests

Never blindly trust the findings of a diagnostic test—know what the results really mean and how reliable they are. This chapter will bring you up to speed on sensitivity, specificity, and predictive values.
6 Lessons
15:06 min
Assessing the validity of diagnostic tests intro
0:28 min
Calculating sensitivity and specificity
4:24 min
Navigating the intricacies of sensitivity and specificity
2:30 min
Interpreting the predictive value—the role of prevalence
4:51 min
Determining the predictive value—the effects of specificity
2:53 min
Assessing the validity of diagnostic tests quiz
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Chapter 3

Expressing disease prognosis

Does an improvement in screening improve disease prognosis? This chapter will give you the answer. Learn how to interpret life tables, 5-year survival rates, and Kaplan-Meier curves.
7 Lessons
25:51 min
Expressing disease prognosis intro
0:29 min
Mastering the basics
3:36 min
Using life tables
6:53 min
Adjusting for withdrawals in life tables
4:37 min
Applying the Kaplan-Meier method
6:21 min
Understanding the effects of stage migration
3:55 min
Expressing disease prognosis quiz
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Chapter 4

Interpreting randomized trials

Randomized trials are the Holy Grail of clinical studies; it's necessary to understand them and interpret them correctly. In this chapter, we'll teach you how to read them with expertise.
6 Lessons
19:09 min
Interpreting randomized trials intro
0:42 min
Mastering the basics
6:40 min
Evaluating data collection methods
3:50 min
Assessing power and errors
5:23 min
Calculating sample size
2:34 min
Interpreting randomized trials quiz
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Chapter 5

Interpreting cohort and case-control studies

Cohort and case-control studies are observational studies used to assess the association between disease and exposure: learn how these studies are designed and when to use them.
6 Lessons
17:46 min
Interpreting cohort and case-control studies intro
0:42 min
Mastering the basics of cohort studies
4:04 min
Comparing the types of cohort studies
3:17 min
Mastering the basics of case-control studies
4:52 min
Assessing control selection
4:51 min
Interpreting cohort and case-control studies quiz
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Chapter 6

Measuring association

The association between a risk factor and disease is often expressed as the relative risk or the odds ratio. Learn how to calculate, interpret, and compare these two common measures.
5 Lessons
15:18 min
Measuring association intro
0:34 min
Calculating relative risk
4:20 min
Calculating the odds ratio
7:00 min
Controlling for confounding
3:24 min
Measuring association quiz
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