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Nursing Research > Design lectures > Flashcards

Design lectures Flashcards

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1
Q

What are the three elements of an experimental study

A

random assignment
manipulation of the Tx (some get it, others dont)
control

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2
Q

What is the diff between quasi exp studies and exp studies

A

quasi will be missing one of the three but always has a manipulation of the Tx

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3
Q

Who are the accessible population

A

those that you drew your sample from

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4
Q

Who are the target population

A

those you will generalize your findings to

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5
Q

What are the main elements of design

A 
study setting 
timing of data colleciton 
sample seleciton 
type of data collected 
issues of control
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6
Q

What are some things that skew internal validity

A 
history 
maturation 
testing 
instrumentation 
mortality 
selection bias
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7
Q

What does history mean in terms of skewed internal validity

A

current events going on in the world outside of your study have an indirect influence on your study

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8
Q

What does maturation mean in terms of skewed internal validity

A

the changes you see might be a result of growth and dev rather than your intervention

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9
Q

What does testing mean in terms of skewed internal validity

A

the results were skewed based on how the act of testing influenced the results

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10
Q

What does instrumentation mean in terms of skewed internal validity

A

an error like changing some instrumentation during the study interferes with the internal validity

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11
Q

What does mortality mean in terms of skewed internal validity

A

the completers of the study are different from the non-completers

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12
Q

What does selection bias mean in terms of skewed internal validity

A

when people are allowed to self select into a study, they may be different from other people that wouldn’t self select

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13
Q

What are the things that can skew external validity

A

effects of selection
reactive effects
effects of testing

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14
Q

What does effects of selection mean in terms of skewed external validity

A

are the people in the study a true representation of the general pop

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15
Q

What does reactive effects (HAWTHORNE EFFECT) mean in terms of skewed external validity

A

the effect is relate to them being studied rather than actual interventions

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16
Q

What does effects of testing mean in terms of skewed external validity

A

the act of testing influences the outcome of the test

17
Q

What are the 4 types of timing of data collcetion

A

retrospective
historical
present or cross sectional
future or prospective

18
Q

What is a retrospective study

A

looking back in time for a past cause of a current problem

19
Q

What is a cross sectional study

A

looking at data from the current time

20
Q

Does a non-experimental study manage the independent variable

A

no

21
Q

What is another term used for a retrospective study

A

ex post facto

22
Q

What are other terms used for prospective studies

A

longitudinal

repeated measures

23
Q

What are some examples of non-experimental designs

A 
relationships 
correlation/difference
retrospective 
prospective
survey
24
Q

What does a classic RCT exp design look like

A

exp and control group, both receive a pretest, one receives the tx the other a placebo, both get a post test

25
Q

What is an exp tests that helps to ID any effects of testing

A

solomom four design

after only

26
Q

What does the solomon four design look like

A

normal design of the classic RCT, but add two more control groups, both dont have any pretest, both have post test, and only one is given the tx

27
Q

What does the after only test look like

A

two groups (exp and cont)
no pretests
one gets the tx
both post test

28
Q

What are some things to ID in the sampling

A

Was it a probability or non-prob sample

29
Q

What is required for probability sampling

A

every person has an equal chance of being selected, like choosing every 3rd person

30
Q

What are some examples of probability sampling

A

systematic
stratified random
cluster

31
Q

What is cluster samping

A

randomly selecting further and further into a random selection strategy, like randoly selecting states, then schools, then from there populations

32
Q

What are some examples of non-probability sampling

A

convenience
quota
network or snowball

33
Q

What is convenience sampling

A

selecting a non-random group, like a teacher selecting their students

Nursing Research (9 decks)

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