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week 6.2 IRM

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Questions and Answers

Which of the following is the correct formula for calculating relative risk?

$RR = \text{one risk} - \text{another risk}$

$RR = \text{one risk} + \text{another risk}$

$RR = \frac{\text{one risk} - \text{another risk}}{\text{another risk}}$

$RR = \frac{\text{one risk}}{\text{another risk}}$ (correct)

What is the absolute risk difference between the risk of dying from a heart attack in those who skip breakfast compared to those who don't?

1.14%

0.64%

0.09% (correct)

0.73%

What is the increased risk of dying from a heart attack for those who skip breakfast compared to those who don't, expressed as a percentage?

14% (correct)

64%

73%

True or false: Truncating an axis is a major issue in data interpretation?

True Signup and view all the answers

True or false: The absolute risk of dying from a heart attack in those 20 years and over is 0.73%?

False Signup and view all the answers

True or false: Relative risk is calculated by dividing one risk by another?

True Signup and view all the answers

Match the following statistics with their correct values based on the data interpretation:

Absolute risk of dying from a heart attack for those 20 years and over = 0.64% Increased risk of dying from a heart attack for those who skip breakfast = 14.00% Absolute risk difference between the risk of dying from a heart attack in those who skip breakfast compared to those who don't = 0.09% Signup and view all the answers

Match the following concepts with their correct mathematical expressions based on the data interpretation:

Relative Risk = $\frac{0.73}{0.64} = 1.14$ Increased Risk Percentage = $14.00%$ Absolute Risk Difference = $0.73 - 0.64 = 0.09$ Signup and view all the answers

Match the issues around data interpretation with their examples from the text:

Misleading axes = Truncating an axis Cherry picking time period = RBA cash rate has increased for the first time Absolute v relative risks = Risk of dying from a heart attack in those who skip breakfast Signup and view all the answers