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Wael Hammad Questions
10601 Questions
A total of 300 newly diagnosed patients with laryngeal cancer are allocated to treatment with either surgical excision alone or surgical excision plus radiation treatment. What is the study design?
Medicine
2022-12-01
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Which one of the following is the Odds ratio, calculated from the given data?
Medicine
2022-12-01
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In an epidemiological study the incidence of disease in females is more than that of males but the prevalence is equal in both. It indicates:
Medicine
2022-12-01
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A village has a total 100 under-five children. The coverage with measles vaccine in this age group is 60% (assuming the efficacy of vaccine to be 100%). Following the occurrence of a measles case in a child after a visit outside, twenty- six children developed measles. The secondary attack rate o
Medicine
2022-12-01
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In a bulk of hundred children out of whom 28 are immunized 2 of them get measles simultaneously. Subsequently14 get measles. Assuming the efficacy of the vaccine to be 100%, what is the secondary attack rate?
Medicine
2022-12-01
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Prophylactic administration of vitamin K in breast fed babies is an example of:
Medicine
2022-12-01
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In a study of 500 cases of a disease and 500 controls, the suspected etiological factor is found in 400 of the cases and 100 of the controls. The absolute risk (incidence of disease in persons with the factor is:
Medicine
2022-12-01
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The smoking history of pregnant women is taken in the antenatal period and correlated with the birth weight at the time of delivery. To find an association between them would be an example of:
Medicine
2022-12-01
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In a cohort study involving the relationship betwe status and the subsequent risk of developing pneumocystis carinii pneumonia, 50 HIV-positive volunteers were followed for 6 months: 100 for 1 year, 100 for 3 years, and 200 for 5 years. The number of person-years of observation in this study w
Medicine
2022-12-01
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If, in one of the groups of premature infants, the maximum value for hexosaminidase A was substituted with a much higher value, which of the given values remains unchanged:
Medicine
2022-12-01
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A nutritional research team followed serum levels of vitamin B12 and folic acid in 125 children for five years to determine the association between cyanocobalamin deficiency and the subsequent risk of developing megaloblastic anemia. The results were as follows:
Medicine
2022-12-01
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Following a large group of cigarette smokers for a period of 10 years to determine the occurrence of chronic obstructive pulmonary disease (COP, coronary heart disease, and various forms of lung cancer would be an example of
Medicine
2022-12-01
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In a cohort study concerning the relationship between the use of exogenous estrogens and the subsequent risk of breast cancer, a sample of 1000 premenopausal women were followed for 8 years. The results are presented in the table above. The relative risk associated with therapy in this study is
Medicine
2022-12-01
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