A prostate specific antigen
(PSA) test is a quick screening test for prostate cancer. A
researcher wants to evaluate it using two groups. Group A consists
of 1500 individuals who had biopsy-proven adenocarcinoma of the
prostrate while group B consists of 3000 age and race-matched
individuals all of whom showed no cancer at biopsy. The results of
the PSA screening test is each group is shown in the table below.
What is the population at risk?
Homework Answers
In group A, positive for PSA screening are 1155. In group B, positive for PSA screening are 240. So these 2 groups of total population 1155 + 240 = 1395. are in risk of developing prostate cancer.
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A prostate specific antigen
(PSA) test is a quick screening test for prostate cancer. A
researcher...
Prostate-specific antigen (PSA) test is a common screening test used for detecting prostate cancer. From Harvard Medical School “Prostate Knowledge” webpage. Is PSA reliable? Although PSA testing ca...
Prostate-specific antigen (PSA) test is a common screening test used for detecting prostate cancer. From Harvard Medical School “Prostate Knowledge” webpage. Is PSA reliable? Although PSA testing can help catch prostate cancer at an early stage, having an elevated PSA (generally considered more than 4 ng/ml) doesn’t necessarily mean that a man has cancer. Noncancerous conditions, including benign prostatic hyperplasia (BPH), or an enlarged prostate, and prostatitis, can raise PSA levels. In fact, studies have shown that about 75% of...
A test for measurement of level of Prostate Specific Antigen (PSA) is a commonly used screening p...
A test for measurement of level of Prostate Specific Antigen (PSA) is a commonly used screening procedure for prostate cancer. Men with PSA levels greater than 10 nanograms per millilitre (ng/ml) (S) have 60% chance of prostate cancer (C), men whose PSA levels are between 4 ng/ml and 10 ng/ml (S) have 25% chance of having prostate cancer (C) and for men whose PSA levels are less than 4ng/ml (S), the risk of developing prostate cancer is 10% (C) Suppose...
16. For whom would Prostate cancer screening (including PSA testing) be the most important. (A) white...
16. For whom would Prostate cancer screening (including PSA testing) be the most important. (A) white males > 70 years old (B) black males > 70 years old (C) black males 40 years old (D) none of A, B or C 19. In the US the majority of ortho-pharyngeal (throat) cancers happen in men over 70. (A) True (B) Unknown (C) False T U BUS IU mary care practice » Pubished Recommendations >> Recommendation Summary>> Final Recommendation Statement: Final Recommendation...
7. Screening for prostate cancer can be fraught with dilemmas because a. The PSA test may...
7. Screening for prostate cancer can be fraught with dilemmas because a. The PSA test may have false negatives b. Cancer can be present even with low levels of PSA c. The PSA does not differentiate between aggressive and slow-growing cancers d. All of the above 8. Patients at risk for colon cancer should have a colonoscopy every 3 to 5 years a. true b. false 9. A pilonidal cyst is: a. A rosette of red tissue seen protruding from...
A test for measurement of level of Prostate Specific Antigen (PSA) is a commonly used screening procedure for prostate cancer. Men with PSA levels greater than 10 nanograms per millilitre (ng/ml) (S) have 60% chance of prostate cancer (C), men whose PSA levels are between 4 ng/ml and 10 ng/ml (S) have 25% chance of having prostate cancer (C) and for men whose PSA levels are less than 4ng/ml (S), the risk of developing prostate cancer is 10% (C) Suppose...
16. For whom would Prostate cancer screening (including PSA testing) be the most important. (A) white males > 70 years old (B) black males > 70 years old (C) black males 40 years old (D) none of A, B or C 19. In the US the majority of ortho-pharyngeal (throat) cancers happen in men over 70. (A) True (B) Unknown (C) False T U BUS IU mary care practice » Pubished Recommendations >> Recommendation Summary>> Final Recommendation Statement: Final Recommendation...
7. Screening for prostate cancer can be fraught with dilemmas because a. The PSA test may have false negatives b. Cancer can be present even with low levels of PSA c. The PSA does not differentiate between aggressive and slow-growing cancers d. All of the above 8. Patients at risk for colon cancer should have a colonoscopy every 3 to 5 years a. true b. false 9. A pilonidal cyst is: a. A rosette of red tissue seen protruding from...
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