RD Exam: Research with Accurate
Solutions
What type of research precedes other research - ANS-Qualitative
How is qualitative data collected? - ANS-Interviews, observations, questionnaires, focus
groups
What are the methods of descriptive research - ANS-Qualitative, survey, case
report/study, correlation/ecological studies
What do correlation/ecological studies compare - ANS-the frequency of events and
disease rates in several different populations. Determines the relationship between the
two
Does analytical or descriptive research test your hypothesis? - ANS-Analytical
What are the 6 types of analytical research - ANS-Experimental, cohort studies,
randomized clinical trial, case control studies, quasi experimental and cross sectional
studies.
What does a cohort study measure? - ANS-Frequency of new cases of a disease in a
group of members with something in common over a certain amount of time. Can be
done retrospectively.
What is another name for randomized clinical trials? *Gold standard - ANS-Clinical
Nutrition Studies
What are the two types of randomized clinical control studies? - ANS-Parallel design
and crossover design
What is parallel design? - ANS-Participants in a randomized clinical trial are randomly
assigned to a certain treatment group and remain in that same treatment group
throughout.
What is crossover design? - ANS-Participant is his own control in a randomized clinical
trial.
What is a two period crossover design? - ANS-The participants receive either the
control or the intervention for the first half and the opposite in the second
, What does a case control study focus on? - ANS-A specific disease
What people does a case control study monitor? - ANS-People with a disease (cases)
are compared with a group that does not have the disease (control group) but have
similar characteristics.
What is quasi experimental/time series? - ANS-a series of measurements at periodic
intervals before the program even begins and when the program ends. Shows
measurements before and after the program as an indication of changes/patterns.
Cross sectional studies are also known as - ANS-Prevalence studies
"Snap shot" look at one point in time - ANS-Cross sectional studies
One time data collection counting all the cases of a certain disease/condition among a
group of people at a particular time - ANS-Cross sectional studies
Which research method describes a group of cases with a disease in common - ANS-
Case report/case study series
What does correlation look at? - ANS-Correlations between conditions not causations
Which study compares frequency of events/disease rates in different populations - ANS-
correlational
The closer the dots are to the line on a correlations graph - ANS-the stronger the data is
R=? Is the most positive correlation - ANS-1
0-0.4 (or -) is a weak or strong correlation? - ANS-Weak
0.4-0.7 (or -) is a weak or strong correlation? - ANS-Moderate
0.7-1.0 (or-) is a weak or strong correlation? - ANS-Strong
R=-1 is - ANS-The most negative correlation
If R=0 - ANS-there is no correlation or relationship
If line is going upwards to the right, this is a - ANS-positive correlation
If the line is going down towards the right - ANS-negative correlation
No line = - ANS-No correlation
Solutions
What type of research precedes other research - ANS-Qualitative
How is qualitative data collected? - ANS-Interviews, observations, questionnaires, focus
groups
What are the methods of descriptive research - ANS-Qualitative, survey, case
report/study, correlation/ecological studies
What do correlation/ecological studies compare - ANS-the frequency of events and
disease rates in several different populations. Determines the relationship between the
two
Does analytical or descriptive research test your hypothesis? - ANS-Analytical
What are the 6 types of analytical research - ANS-Experimental, cohort studies,
randomized clinical trial, case control studies, quasi experimental and cross sectional
studies.
What does a cohort study measure? - ANS-Frequency of new cases of a disease in a
group of members with something in common over a certain amount of time. Can be
done retrospectively.
What is another name for randomized clinical trials? *Gold standard - ANS-Clinical
Nutrition Studies
What are the two types of randomized clinical control studies? - ANS-Parallel design
and crossover design
What is parallel design? - ANS-Participants in a randomized clinical trial are randomly
assigned to a certain treatment group and remain in that same treatment group
throughout.
What is crossover design? - ANS-Participant is his own control in a randomized clinical
trial.
What is a two period crossover design? - ANS-The participants receive either the
control or the intervention for the first half and the opposite in the second
, What does a case control study focus on? - ANS-A specific disease
What people does a case control study monitor? - ANS-People with a disease (cases)
are compared with a group that does not have the disease (control group) but have
similar characteristics.
What is quasi experimental/time series? - ANS-a series of measurements at periodic
intervals before the program even begins and when the program ends. Shows
measurements before and after the program as an indication of changes/patterns.
Cross sectional studies are also known as - ANS-Prevalence studies
"Snap shot" look at one point in time - ANS-Cross sectional studies
One time data collection counting all the cases of a certain disease/condition among a
group of people at a particular time - ANS-Cross sectional studies
Which research method describes a group of cases with a disease in common - ANS-
Case report/case study series
What does correlation look at? - ANS-Correlations between conditions not causations
Which study compares frequency of events/disease rates in different populations - ANS-
correlational
The closer the dots are to the line on a correlations graph - ANS-the stronger the data is
R=? Is the most positive correlation - ANS-1
0-0.4 (or -) is a weak or strong correlation? - ANS-Weak
0.4-0.7 (or -) is a weak or strong correlation? - ANS-Moderate
0.7-1.0 (or-) is a weak or strong correlation? - ANS-Strong
R=-1 is - ANS-The most negative correlation
If R=0 - ANS-there is no correlation or relationship
If line is going upwards to the right, this is a - ANS-positive correlation
If the line is going down towards the right - ANS-negative correlation
No line = - ANS-No correlation
