10-04-2010, 02:48 AM
1, In an investigation to study the effect of smoking on renal cell cancer, it is observed that 30 of the 50 patients were smokers as compared to 10 out of 50 control subjects. The odd ratio of renal cancer associated with smoking will be:
a) 3.0
b) 0.33
c) 6.0
d) 0.16
2, A chest physician observed that the distribution of forced expiratory volume (FEV) in 300 smokers had a median value of 2.5 litres with the first and third quartiles being 1.5 and 4.5 litres respectively. Based on this data how many persons in the smaple are expected to have a FEV between 1.5 to 4.5 litres ?
a) 75
b) 150
c) 225
d) 300
3,If the distribution of intra-ocular pressure (IOP) seen in 100 glaucoma patients has an average 30 mm with a SD of 10 what is the lower limit to the average IOP that can be expected 95% of times?
a) 28
b) 26
c) 32
d) 25
4, A diagonstic test for a particular disease has a sensitivity of 0.90 and specificity of .90. A single test is applied to each subject in the population in which the diseased population is 10%. What is the probability that a person positive to this test, has the disease?
a) 90%
b) 81%
c) 50%
d) 91%
a) 3.0
b) 0.33
c) 6.0
d) 0.16
2, A chest physician observed that the distribution of forced expiratory volume (FEV) in 300 smokers had a median value of 2.5 litres with the first and third quartiles being 1.5 and 4.5 litres respectively. Based on this data how many persons in the smaple are expected to have a FEV between 1.5 to 4.5 litres ?
a) 75
b) 150
c) 225
d) 300
3,If the distribution of intra-ocular pressure (IOP) seen in 100 glaucoma patients has an average 30 mm with a SD of 10 what is the lower limit to the average IOP that can be expected 95% of times?
a) 28
b) 26
c) 32
d) 25
4, A diagonstic test for a particular disease has a sensitivity of 0.90 and specificity of .90. A single test is applied to each subject in the population in which the diseased population is 10%. What is the probability that a person positive to this test, has the disease?
a) 90%
b) 81%
c) 50%
d) 91%