Data analysis T1

Question 1

What is meant by correlation.

1

Answer 1

-There’s an association but no casual link.

Question 2

Explain how smoking increases the risk of developing atherosclerosis.
(3)

Answer 2

• Nicotine stimulates adrenaline which increases heart rate/blood pressure.
• High blood pressure damages endothelium.
• Leading to inflammatory responce/plaque.

Question 3

How do you measure BMI?

Answer 3

Mass in kg/ height in m2

Question 4

Explain the health risks of having a very high BMI.

5

Answer 4

• High blood pressure causes damage to endothelium.
• Atherosclerosis leads to narrowing of lumen of arteries.
• Heart disease as a result of narrowing coronary arteries lumen.
• Stroke as a result of reduced blood flow to brain.
• Joint damage caused by increase in body mass damaging cartilage.
• Type 2 diabetes caused by reduced sensitivity of insulin receptors.