Screening is considered to be a justifiable approach to cancer control for all of the following reasons EXCEPT: Screening has only benefits and no harms The populations at highest risk can be known from epidemiology data Advanced cancer is hard to cure and often kills The development of cancer from pre-malignancy (dysplasia) takes a long time
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Indicate whether the following statements are true or false: The purpose of screening is to identify symptomatic cases of disease. Screening is conducted to reduce morbidity and improve survival. The predictive value positive is more influenced by the specificity than the sensitivity of the screening test. The specificity of a screening test determines the number of false-positive results. The incidence of the target disease will likely increase when a new screening test becomes widely used. Unlike cohort studies, experimental studies of screening effectiveness avoid volunteer bias.
Suman K.
QUESTION 4 A primary prevention method that could reduce the risk of cancer would be: A. Unprotected sex B. Early identification of lumps or tumors C. Healthy dietary intake and exercise D. There is no primary prevention for cancer QUESTION 5 Why are screenings such as blood tests and mammograms considered secondary prevention and not primary? A. They are very expensive B. The disease cannot be prevented by having the test C. There is no evidence-based method of preventing or decreasing the risk of disease D. The question is incorrect; these are primary prevention measures
Marlyn J.
Which of the following best defines lead-time bias? Screening identifies an illness that would not have shown clinical signs before death from other causes. Slow-progressing cases of disease with a better prognosis are more likely to be identified than faster-progressing cases, resulting in a better prognosis than the average of all cases. Difference in the time between the date of diagnosis with screening and the date of diagnosis without screening, which, if counted in the survival time of patients, will give a misleading picture of the benefits of treatment.
Qudsiya A.
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