Lung cancer Cardiovascular disease Mortality rate per 1,000 person-years Smokers 1.30 9.51 Non-smokers 0.07 7.32 All 0.94 8.87 Rate ratio 18.5 1.3 Excess deaths per 1000 person-years 1.23 2.19 7) Which cause of death has a stronger association with smoking. Why? Attributable risk percent among smokers 95% 23%
Lung cancer Cardiovascular disease Mortality rate per 1,000 person-years Smokers 1.30 9.51 Non-smokers 0.07 7.32 All 0.94 8.87 Rate ratio 18.5 1.3 Excess deaths per 1000 person-years 1.23 2.19 7) Which cause of death has a stronger association with smoking. Why? Attributable risk percent among smokers 95% 23%
Chapter1: Making Economics Decisions
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Transcribed Image Text:**Table 4. Mortality rates (per 1,000 person-years), rate ratios, and excess deaths from lung cancer and cardiovascular disease by smoking status, Doll and Hill physician cohort study, Great Britain, 1951-1961.**
| **Mortality rate per 1,000 person-years** | **Smokers** | **Non-smokers** | **All** | **Rate ratio** | **Excess deaths per 1000 person-years** | **Attributable risk percent among smokers** |
|-------------------------------------------|-------------|-----------------|---------|----------------|----------------------------------------|-------------------------------------------|
| Lung cancer | 1.30 | 0.07 | 0.94 | 18.5 | 1.23 | 95% |
| Cardiovascular disease | 9.51 | 7.32 | 8.87 | 1.3 | 2.19 | 23% |
**Question 7:** Which cause of death has a stronger association with smoking? Why?
**Explanation of the Table:**
This table presents the mortality rates, rate ratios, excess deaths, and attributable risk percentages for lung cancer and cardiovascular disease among smokers and non-smokers from a study conducted in Great Britain between 1951 and 1961.
- **Mortality Rate per 1,000 person-years:** This indicates the number of deaths per 1,000 individuals in a year for smokers and non-smokers.
- **Rate Ratio:** This metric shows how many times higher the death rate is among smokers compared to non-smokers.
- **Excess Deaths per 1000 person-years:** This reflects the additional deaths per year per 1,000 people attributable to smoking.
- **Attributable Risk Percent among Smokers:** This percentage indicates how much of the mortality risk can be attributed to smoking.
**Key Points:**
- Lung cancer has a much higher rate ratio (18.5) compared to cardiovascular disease (1.3), indicating that smokers are 18.5 times more likely to die from lung cancer than non-smokers, whereas they are only 1.3 times more likely to die from cardiovascular disease.
- The attributable risk percent for lung cancer among smokers is 95%, suggesting that smoking is responsible for nearly all lung cancer deaths among smokers. In contrast, for cardiovascular disease, the
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