7) In a study among elderly patients with diabetes, the aim was to study if the intake of metformin was associated with lower level of vitamin B12. The alternative hypothesis is: A. Vitamin B12 status is not associated with metformin intake B. Vitamin B12 status is not different between elderly diabetic patients' group who takes metformin in comparison to the group who does not take metformin C. A+B are correct D. Metformin intake in elderly patients with diabetes reduces vitamin B12 status 28) A group of infants with rickets were selected

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7) In a study among elderly patients with diabetes, the aim was to study if the intake of metformin was
associated with lower level of vitamin B12. The alternative hypothesis is:
A. Vitamin B12 status is not associated with metformin intake
B. Vitamin B12 status is not different between elderly diabetic patients' group who takes metformin in
comparison to the group who does not take metformin
C. A+B are correct
D. Metformin intake in elderly patients with diabetes reduces vitamin B12 status
28) A group of infants with rickets were selected to participate in a study based on diagnosis, ethnicity and age
and then they were matched with healthy infants based on age, weight and higher. The goal of the study
was to compare vitamin D status between the two groups. This is:
A. A cross sectional study
C. Retrospective study
D. Noe is applicable
B. Case control study
29) The level of education (Baccalaureate, Master, & PhD) is considered:
A. Scale variable
C. Ordinal variable
B. Metric variable
D. None of the choices
30) Researchers intended to take urine samples from university students to assess if iodine level can affect
university achievement in terms of GPA (Total grades).
A. In this case specifically, researchers should obtain the names of the study participants and disclose them
to authority
B. Since it is about urine samples, informed consent is not required
C. B+A are correct
D. Informed consent should be obtained and biological samples should be confidential
31) Two researchers from An-Najah National University decided to conduct a study on diabetic patients in
Palestine in order to determine the prevalence of the disease in 2022 in the West Bank particularly. The best
study design to use is
A. Prospective cohort study
C. Case-control study
B. Cross-sectional study
D. Retrospective cohort study
2: Fill the following statements with the suitable answer from the table
No.
1
4
5
6
7
8
9
10
2
Method Type II
Answer
3
Retrospective cluster
cohort study
a simple Sampling dependent
Type 1 independent a
random
bias
focus
group
1. Providing more information about the research setting, data collection tools, and the context of the study is a ---
section of research.
2.
is a research technique used to collect data through group interaction
3.
-occurs when a research study design fails to collect a representative sample of a target population
----variable is a variable whose value will change depending on the value of another variable
4.
5. A study design that is suitable for diseases with long latency period
6.
error is when the test result says you have coronavirus, but you actually don't.
- error
7. The mistaken acceptance of an actually false null hypothesis is
8. Successive random sampling of units from larger to smaller units (e.g., states, then zip codes, then households)
----sampling
is an example of
sampling
9. The sampling method that involves random selection of elements from the sampling frame is
Transcribed Image Text:7) In a study among elderly patients with diabetes, the aim was to study if the intake of metformin was associated with lower level of vitamin B12. The alternative hypothesis is: A. Vitamin B12 status is not associated with metformin intake B. Vitamin B12 status is not different between elderly diabetic patients' group who takes metformin in comparison to the group who does not take metformin C. A+B are correct D. Metformin intake in elderly patients with diabetes reduces vitamin B12 status 28) A group of infants with rickets were selected to participate in a study based on diagnosis, ethnicity and age and then they were matched with healthy infants based on age, weight and higher. The goal of the study was to compare vitamin D status between the two groups. This is: A. A cross sectional study C. Retrospective study D. Noe is applicable B. Case control study 29) The level of education (Baccalaureate, Master, & PhD) is considered: A. Scale variable C. Ordinal variable B. Metric variable D. None of the choices 30) Researchers intended to take urine samples from university students to assess if iodine level can affect university achievement in terms of GPA (Total grades). A. In this case specifically, researchers should obtain the names of the study participants and disclose them to authority B. Since it is about urine samples, informed consent is not required C. B+A are correct D. Informed consent should be obtained and biological samples should be confidential 31) Two researchers from An-Najah National University decided to conduct a study on diabetic patients in Palestine in order to determine the prevalence of the disease in 2022 in the West Bank particularly. The best study design to use is A. Prospective cohort study C. Case-control study B. Cross-sectional study D. Retrospective cohort study 2: Fill the following statements with the suitable answer from the table No. 1 4 5 6 7 8 9 10 2 Method Type II Answer 3 Retrospective cluster cohort study a simple Sampling dependent Type 1 independent a random bias focus group 1. Providing more information about the research setting, data collection tools, and the context of the study is a --- section of research. 2. is a research technique used to collect data through group interaction 3. -occurs when a research study design fails to collect a representative sample of a target population ----variable is a variable whose value will change depending on the value of another variable 4. 5. A study design that is suitable for diseases with long latency period 6. error is when the test result says you have coronavirus, but you actually don't. - error 7. The mistaken acceptance of an actually false null hypothesis is 8. Successive random sampling of units from larger to smaller units (e.g., states, then zip codes, then households) ----sampling is an example of sampling 9. The sampling method that involves random selection of elements from the sampling frame is
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