Question

Assume smokers suffer from 160 cases of lung cancer per 1,000 and non-smokers suffer from 6 cases of lung cancer per 1,000. Also, assume in Rhode Island 30% of the population smokes. What is the cumulative incidence of lung cancer in Rhode Island

Answer 1

The cumulative incidence of lung cancer in Rhode Island, considering 30% of the population smokes, is 52.2 cases of lung cancer per 1,000 people.

Step-by-step explanation:

To calculate the cumulative incidence of lung cancer in Rhode Island, we consider the incidence rates among smokers and non-smokers and the proportion of smokers in the population.

According to the information provided:

• Smokers suffer from 160 cases of lung cancer per 1,000.
• Non-smokers suffer from 6 cases of lung cancer per 1,000.
• 30% of the Rhode Island population smokes.

We calculate the cumulative incidence using the formula:

Cumulative Incidence = (Incidence in Smokers × Proportion of Smokers) + (Incidence in Non-Smokers × Proportion of Non-Smokers)

For the smokers:

• 160 cases × 0.30 (30%) = 48 cases per 1,000

For the non-smokers:

• 6 cases × 0.70 (70%) = 4.2 cases per 1,000

Adding these together:

• Cumulative incidence in Rhode Island = 48 + 4.2 = 52.2 cases per 1,000

This is the overall risk of developing lung cancer in the state, given the current smoking rates.