All India Institute of Medical Sciences 2003 - Question Paper

3. Can lead to pleural mesothelioma.
4. Sputum contains asbestos bodies.
Ans 1

80. In calculating Dependency Ratio, the numerator is expressed as :
1. Population under 10 years and 60 and above.
2. Population under 15 years and 60 and above.
3. Population under 10 years and 65 and above
4. Population under 15 years and 65 and above
Ans 4
81. A adult male patient presented in the OPD with complaints of cough and fever for three months and haemoptysis off and on. His sputum was positive for AFB. On probing it was obtained that
he had already received treatment with RHZE for three weeks from a nearby hospital and discontinued. How will you categorize and manage the patient ?
1. Category III, begin two (RHZ)3.
2. Category II, begin two (RHZE)3.
3. Category I, begin two (RHZE)3.
4. Category II, begin two (RHZES)3.
Ans 4

82. A screening test is used in the identical way in 2 similar populations; but the proportion of false positive outcomes among those who test positive in population A is lower than those who test positive in population B. What is the likely explanation?
1. The specificity of the test is lower in population A.
2. The prevalence of the disease is lower in population A.
3. The prevalence of the disease is higher in population A.
4. The specificity of the test is higher in population A.
Ans three (PPV increases with incidence)

83 Residence of 3 village with 3 various kinds of water supply were asked to participate in a study to identify cholera carries. Because several cholera deaths had occurred in the latest past, virtually everyone current at the time submitted to exam. The proportion of residents in every village who were carries was calculated and compared. This study is a :
1. Cross- sectional study.
2. Case-control study.
3. Concurrent cohort study.
4. Non-concurrent.
Ans 1

84. A drug company is developing a new pregnancy-test kit for use on an outpatient basis. The company used the pregnancy test on 100 women who are known to be pregnant. Out of 100 women, 99 showed positive test. Upon using the identical test on 100 non-pregnant women, 90 showed negative outcome. What is the sensitivity of the test ?
1. 90%
2. 99%
3. avg. of 90 & 99.
4. Cannot be computed from the provided data.
Ans 2

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