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Rim Halaby (talk | contribs) (Created page with "{{WBRQuestion |QuestionAuthor={{Rim}} |ExamType=USMLE Step 1 |MainCategory=Biostatistics/ Epidemiology |SubCategory=Pulmonology, General Principles |MainCategory=Biostatistics...") |
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{{WBRQuestion | {{WBRQuestion | ||
|QuestionAuthor={{ | |QuestionAuthor={{YD}} (Reviewed by Serge Korjian) | ||
|ExamType=USMLE Step 1 | |ExamType=USMLE Step 1 | ||
|SubCategory=Pulmonology, General Principles | |SubCategory=Pulmonology, General Principles | ||
|SubCategory=Pulmonology, General Principles | |SubCategory=Pulmonology, General Principles | ||
|SubCategory=Pulmonology, General Principles | |SubCategory=Pulmonology, General Principles | ||
|SubCategory=Pulmonology, General Principles | |SubCategory=Pulmonology, General Principles | ||
|SubCategory=Pulmonology, General Principles | |SubCategory=Pulmonology, General Principles | ||
|SubCategory=Pulmonology, General Principles | |SubCategory=Pulmonology, General Principles | ||
|SubCategory=Pulmonology, General Principles | |SubCategory=Pulmonology, General Principles | ||
|SubCategory=Pulmonology, General Principles | |SubCategory=Pulmonology, General Principles | ||
|Prompt=An epidemiologist is studying the prevalence of cancer among patients older than 40 years of age. He stratifies his collected data according to gender and according to mortality from the underlying cancer. | |Prompt=An epidemiologist is studying the prevalence of cancer among patients older than 40 years of age. He stratifies his collected data according to gender and according to mortality from the underlying cancer. Assuming his sample is representative of the general population, what would be the most common fatal cancer in this study group? | ||
|Explanation=The 3 most common cancers in males are as follows in decreasing prevalence: Prostate (most common), then lung, then colorectal. On the other hand, the 3 most common cancers in females are breast (most common), then lung, then colorectal. Nonetheless, prostate cancer in males and breast cancer in females are not the most common fatal cancers. The most common fatal cancer in both genders is lung cancer. | |Explanation=[[File:Top_ten_fatal_cancers_women.jpg]] | ||
The 3 most common cancers in males are as follows in decreasing prevalence: Prostate (most common), then lung, then colorectal. On the other hand, the 3 most common cancers in females are breast (most common), then lung, then colorectal. Nonetheless, prostate cancer in males and breast cancer in females are not the most common fatal cancers. The most common fatal cancer in both genders is lung cancer. | |||
|AnswerA=Breast cancer | |AnswerA=Breast cancer | ||
|AnswerAExp=Although breast cancer is the most common cancer in females, it is not the most common fatal cancer. It is in fact the 2nd most common fatal cancer among females. | |AnswerAExp=Although breast cancer is the most common cancer in females, it is not the most common fatal cancer. It is in fact the 2nd most common fatal cancer among females. | ||
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|AnswerE=Lymphoma | |AnswerE=Lymphoma | ||
|AnswerEExp=Lymphoma is not the most common fatal cancer in older patients. | |AnswerEExp=Lymphoma is not the most common fatal cancer in older patients. | ||
|EducationalObjectives=The most common fatal cancer in men and women is lung cancer. | |||
|References=U.S. Cancer Statistics Working Group. United States Cancer Statistics: 1999–2011 Incidence and Mortality Web-based Report. Atlanta: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention and National Cancer Institute; 2014. Available at: www.cdc.gov/uscs. | |||
|RightAnswer=D | |RightAnswer=D | ||
|WBRKeyword= | |WBRKeyword=Lung cancer, Incidence, Prevalence, Cancer, Fatal, Mortality, Death, Breast cancer, Colorectal cancer, Women | ||
|Approved= | |Approved=Yes | ||
}} | }} | ||
Revision as of 20:12, 22 October 2014
| Author | [[PageAuthor::Yazan Daaboul, M.D. (Reviewed by Serge Korjian)]] |
|---|---|
| Exam Type | ExamType::USMLE Step 1 |
| Main Category | |
| Sub Category | SubCategory::Pulmonology, SubCategory::General Principles |
| Prompt | [[Prompt::An epidemiologist is studying the prevalence of cancer among patients older than 40 years of age. He stratifies his collected data according to gender and according to mortality from the underlying cancer. Assuming his sample is representative of the general population, what would be the most common fatal cancer in this study group?]] |
| Answer A | AnswerA::Breast cancer |
| Answer A Explanation | AnswerAExp::Although breast cancer is the most common cancer in females, it is not the most common fatal cancer. It is in fact the 2nd most common fatal cancer among females. |
| Answer B | AnswerB::Colorectal cancer |
| Answer B Explanation | AnswerBExp::Colorectal cancer is the 3rd most common cancer and the 3rd most common fatal cancer in both males and females. |
| Answer C | AnswerC::Gastric cancer |
| Answer C Explanation | AnswerCExp::Gastric cancer is not the most common fatal cancer in older patients. |
| Answer D | AnswerD::Lung cancer |
| Answer D Explanation | AnswerDExp::Lung cancer is the most common fatal cancers in both males and females. |
| Answer E | AnswerE::Lymphoma |
| Answer E Explanation | AnswerEExp::Lymphoma is not the most common fatal cancer in older patients. |
| Right Answer | RightAnswer::D |
| Explanation | [[Explanation::
The 3 most common cancers in males are as follows in decreasing prevalence: Prostate (most common), then lung, then colorectal. On the other hand, the 3 most common cancers in females are breast (most common), then lung, then colorectal. Nonetheless, prostate cancer in males and breast cancer in females are not the most common fatal cancers. The most common fatal cancer in both genders is lung cancer. |
| Approved | Approved::Yes |
| Keyword | WBRKeyword::Lung cancer, WBRKeyword::Incidence, WBRKeyword::Prevalence, WBRKeyword::Cancer, WBRKeyword::Fatal, WBRKeyword::Mortality, WBRKeyword::Death, WBRKeyword::Breast cancer, WBRKeyword::Colorectal cancer, WBRKeyword::Women |
| Linked Question | Linked:: |
| Order in Linked Questions | LinkedOrder:: |