A city contains 100,000 people (45,000 male and 55,000 females), and 1,000 people die per year (600 males and 400 females). There were 50 cases (40 males and 10 females) of lung cancer per year of whom 45 died (36 males and 9 females).
Using this information compute:
1. The crude mortality rate per 1 000
2. The sex-specific mortality rate per 1,000
3. The cause-specific mortality rate per 1,000 for lung cancer
4. The case fatality rate for lung cancer
5. The proportionate mortality ratio for lung cancer
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- The crude mortality rate per 1,000:
To calculate the crude mortality rate, we need to divide the total number of deaths by the total population and then multiply by 1,000.
Crude Mortality Rate = (Total Deaths / Total Population) * 1,000
Total Deaths = 1,000 (600 males + 400 females) Total Population = 100,000
Crude Mortality Rate = (1,000 / 100,000) * 1,000 = 10 per 1,000
Therefore, the crude mortality rate is 10 deaths per 1,000 people.
- The sex-specific mortality rate per 1,000:
To calculate the sex-specific mortality rate, we need to divide the number of deaths in each gender by the respective population and then multiply by 1,000.
Mortality Rate (males) = (Deaths in males / Male population) * 1,000 Mortality Rate (females) = (Deaths in females / Female population) * 1,000
Deaths in males = 600 Male population = 45,000
Mortality Rate (males) = (600 / 45,000) * 1,000 = 13.33 per 1,000
Deaths in females = 400 Female population = 55,000
Mortality Rate (females) = (400 / 55,000) * 1,000 = 7.27 per 1,000
Therefore, the sex-specific mortality rate for males is 13.33 deaths per 1,000 males, and for females, it is 7.27 deaths per 1,000 females.
- The cause-specific mortality rate per 1,000 for lung cancer:
To calculate the cause-specific mortality rate for lung cancer, we need to divide the number of lung cancer deaths by the total population and then multiply by 1,000.
Lung cancer deaths = 45 (36 males + 9 females) Total Population = 100,000
Cause-specific Mortality Rate (lung cancer) = (Lung cancer deaths / Total Population) * 1,000
Cause-specific Mortality Rate (lung cancer) = (45 / 100,000) * 1,000 = 0.45 per 1,000
Therefore, the cause-specific mortality rate for lung cancer is 0.45 deaths per 1,000 people.
- The case fatality rate for lung cancer:
To calculate the case fatality rate for lung cancer, we need to divide the number of lung cancer deaths by the number of lung cancer cases and then multiply by 100.
Lung cancer deaths = 45 Lung cancer cases = 50
Case Fatality Rate (lung cancer) = (Lung cancer deaths / Lung cancer cases) * 100
Case Fatality Rate (lung cancer) = (45 / 50) * 100 = 90%
Therefore, the case fatality rate for lung cancer is 90%.
- The proportionate mortality ratio for lung cancer:
To calculate the proportionate mortality ratio for lung cancer, we need to divide the number of lung cancer deaths by the total number of deaths and then multiply by 100.
Lung cancer deaths = 45 Total Deaths = 1,000
Proportionate Mortality Ratio (lung cancer) = (Lung cancer deaths / Total Deaths) * 100
Proportionate Mortality Ratio (lung cancer) = (45 / 1,000) * 100 = 4.5%
Therefore, the proportionate mortality ratio for lung cancer is 4.5%.