HLTH 501 Wk 8 Final Exam
Question 1
10 out of 10 points
Match the Following:
Question Correct Match Selected Match
Bias E. E.
Systematic uncertainty Systematic uncertainty
Double Blind D. D.
Subject and researcher unaware Subject and researcher unaware
of treatment status of treatment status
Clinical Trial J. J.
Subject randomly assigned to Subject randomly assigned to
treatment groups treatment groups
Cohort I. I.
Subjects with common Subjects with common
characteristics followed over characteristics followed over
time time
Confounding A. A.
Risk factor distortion Risk factor distortion
Cross- H. H.
sectional At a single point in time At a single point in time
Disease C. C.
Incidence Number of new case of disease Number of new case of disease
over time over time
Intention to B. B.
treat Do not have to complete Do not have to complete
treatment treatment
Matching F. F.
Creating similar comparison Creating similar comparison
groups groups
Per protocol G. G.
Followed all treatment/study Followed all treatment/study
procedures procedures
, Question 2
10 out of 10 points
A study is planned to assess the effect of a new surgical intervention for gallbladder
disease. One hundred patients with gallbladder disease will be randomly assigned
to receive either the new surgical intervention or the standard surgical intervention.
The efficacy of the new surgical intervention will be measured by the time is takes a
patient to return to normal activities, measured in days. Identify the type of study
proposed and indicate its specific strengths and weaknesses.
Type of study: (3.3 points)
Strengths: (3.3 points)
Weaknessess: (3.3 points)
Selected Type of study: This is a randomized controlled trial because one group is receiving
Answer:
the new surgical intervention and the other group is receiving the standard one in a
randomized selection process.
Strengths: A strength in this type of study is the lack of bias because the persons
selected for each group is random, and because of ethical standards, the patients
should be aware of which surgery they will be receiving.
Weaknesses: A weakness is with the measurement of when these people return
to normal activities. Everyone is going to be different when it comes to recovery
time, and some people may even have complications that hinder healing no
matter which surgery was performed. I think they will be able to get a baseline
of about how many days the average recovery is, but no exact numbers. I also
don’t think that having the efficacy of a surgery measured in recovery days is a
good idea, I think that with organ surgery it should be based off of how their
body is responding to what has been done overall and in different lengths of
time after the procedure.
Correct [None]
Answer:
Question 3
10 out of 10 points
In 1940, 2,000 women working in a factory were recruited into a study. Half of the
women worked in manufacturing and half in administrative offices. The incidence of
bone cancer through 1970 among the 1,000 women working in manufacturing was
compared with that of 1,000 women working in administrative offices. Thirty of the
women in manufacturing developed bone cancer as compared to 9 of the women in
administrative offices. This study is an example of a:
Selected
Answer:
cohort study
Correct
Answer:
cohort study
Question 4
Question 1
10 out of 10 points
Match the Following:
Question Correct Match Selected Match
Bias E. E.
Systematic uncertainty Systematic uncertainty
Double Blind D. D.
Subject and researcher unaware Subject and researcher unaware
of treatment status of treatment status
Clinical Trial J. J.
Subject randomly assigned to Subject randomly assigned to
treatment groups treatment groups
Cohort I. I.
Subjects with common Subjects with common
characteristics followed over characteristics followed over
time time
Confounding A. A.
Risk factor distortion Risk factor distortion
Cross- H. H.
sectional At a single point in time At a single point in time
Disease C. C.
Incidence Number of new case of disease Number of new case of disease
over time over time
Intention to B. B.
treat Do not have to complete Do not have to complete
treatment treatment
Matching F. F.
Creating similar comparison Creating similar comparison
groups groups
Per protocol G. G.
Followed all treatment/study Followed all treatment/study
procedures procedures
, Question 2
10 out of 10 points
A study is planned to assess the effect of a new surgical intervention for gallbladder
disease. One hundred patients with gallbladder disease will be randomly assigned
to receive either the new surgical intervention or the standard surgical intervention.
The efficacy of the new surgical intervention will be measured by the time is takes a
patient to return to normal activities, measured in days. Identify the type of study
proposed and indicate its specific strengths and weaknesses.
Type of study: (3.3 points)
Strengths: (3.3 points)
Weaknessess: (3.3 points)
Selected Type of study: This is a randomized controlled trial because one group is receiving
Answer:
the new surgical intervention and the other group is receiving the standard one in a
randomized selection process.
Strengths: A strength in this type of study is the lack of bias because the persons
selected for each group is random, and because of ethical standards, the patients
should be aware of which surgery they will be receiving.
Weaknesses: A weakness is with the measurement of when these people return
to normal activities. Everyone is going to be different when it comes to recovery
time, and some people may even have complications that hinder healing no
matter which surgery was performed. I think they will be able to get a baseline
of about how many days the average recovery is, but no exact numbers. I also
don’t think that having the efficacy of a surgery measured in recovery days is a
good idea, I think that with organ surgery it should be based off of how their
body is responding to what has been done overall and in different lengths of
time after the procedure.
Correct [None]
Answer:
Question 3
10 out of 10 points
In 1940, 2,000 women working in a factory were recruited into a study. Half of the
women worked in manufacturing and half in administrative offices. The incidence of
bone cancer through 1970 among the 1,000 women working in manufacturing was
compared with that of 1,000 women working in administrative offices. Thirty of the
women in manufacturing developed bone cancer as compared to 9 of the women in
administrative offices. This study is an example of a:
Selected
Answer:
cohort study
Correct
Answer:
cohort study
Question 4
