1. Have the total number of cancer deaths since 1990 increased or decreased? 2. Has the rate of death per 100,000 people increased or decreased? 3. A rate is a measure of frequency... 1. Have the total number of cancer deaths since 1990 increased or decreased? 2. Has the rate of death per 100,000 people increased or decreased? 3. A rate is a measure of frequency, or how often something happens. The blue line shows the rate of cancer deaths. Do you think this graph represents an improvement in medical care? Why or why not? 4. Take into account the fact that Earth's populations are increasing. How could this fact explain the differences in the cancer death rate vs. the total number of cancer deaths? 5. What factors of society are different in 2016 than in 1990? Make an inference about what may be affecting the total cancer death rate.
Understand the Problem
The question is asking for an analysis of cancer death statistics over time based on the provided graph. Specifically, it requires understanding changes in total cancer deaths and ratios per 100,000 people, as well as considering societal factors affecting these numbers.
Answer
Increased total deaths; decreased death rate. The graph indicates improved medical care. Population growth affects total deaths.
- The total number of cancer deaths has increased.
- The rate of death per 100,000 people has decreased.
- The graph likely shows an improvement in medical care since the death rate is decreasing.
- Population growth can explain the increase in total deaths despite a decreased rate.
- Advances in healthcare, awareness, and early detection have improved since 1990.
Answer for screen readers
- The total number of cancer deaths has increased.
- The rate of death per 100,000 people has decreased.
- The graph likely shows an improvement in medical care since the death rate is decreasing.
- Population growth can explain the increase in total deaths despite a decreased rate.
- Advances in healthcare, awareness, and early detection have improved since 1990.
More Information
The decrease in cancer death rates per 100,000 people since the 1990s shows progress in medical technology and treatments. However, absolute numbers of deaths can rise with population growth even as individual risk declines.
Tips
A common mistake is not considering population growth when analyzing trends in total death numbers.
Sources
- Cancer deaths - Health, United States - CDC - cdc.gov
- Cancer death rate trends - Our World in Data - ourworldindata.org
- American Cancer Society - Cancer Facts and Figures - cancer.org
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