Question

the graph shows the incidence rate of lung and oral cancer in relation to tobacco use.
what can be concluded from the graph?
the incidence rates for lung and oral cancer are higher in cigarette smokers than in powdered tobacco users.
the incidence rate for lung cancer is higher in non - tobacco users than in powdered tobacco users.
the incidence rates for lung and oral cancer are higher in powdered tobacco users than in cigarette smokers.
the incidence rate for oral cancer is higher in powdered tobacco users than in cigarette smokers.

Explanation:

Step1: Analyze lung cancer incidence

For lung cancer, cigarette smokers have an incidence rate of \(82.3\) per \(100,000\) people, powdered tobacco users have \(6\) per \(100,000\) people. So \(82.3>6\).

Step2: Analyze oral cancer incidence

For oral cancer, cigarette smokers have an incidence rate of \(6.9\) per \(100,000\) people, powdered tobacco users have \(3.1\) per \(100,000\) people. So \(6.9 > 3.1\).

For the second option: non - tobacco users (\(8.6\) for lung) vs powdered tobacco users (\(6\) for lung), \(8.6>6\) is wrong.

For the third option: \(82.3>6\) (lung) and \(6.9>3.1\) (oral) for cigarette smokers vs powdered tobacco users, so this option is wrong.

For the fourth option: \(6.9>3.1\) (oral) for cigarette smokers vs powdered tobacco users, so this option is wrong.

Answer:

The incidence rates for lung and oral cancer are higher in cigarette smokers than in powdered tobacco users.