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eip ii chapter 13 Flashcards | StudBud
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eip ii chapter 13
eip ii chapter 13
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Answers
1
smallest treatment effect that would result in a change in pt management
IDK
MDC
MCID
MCD
2
several studies indicate that losses of __% of data have undermined the research validity of the study
15-20% or more
5%
10-15% or more
10%
3
why is an intention to treat analysis valued?
researchers maintain consistent levels of bias
maintains initial timeline set by researchers
sample size is maintained
preserves randomized allocation process
4
calculate the number needed to treat in this hypothetical study
RRR/ARR = .35
1/RRR = 1.67
1/ARR = 4.76
ARR/RRR = 2.85
5
which of the following is a con of using an imputation method according to the textbook?
may introduce error to various degrees depending on approach
may change funding criteria for experiment
may change the research design from experimental to quasi-experimental
may introduce previously checked biases
6
95% CI around the ARR (14, 28); MCID is 25%. why might this intervention be useful?
MCID falls in the CI range
60% RRR
ARR falls within CI
wide range of CI
7
what can researchers use to estimate missing data?
calculation methods
amputation methods
importation methods
imputation methods
8
EBP sources consistently place ____ higher in ranking than _____
experimental ; quasi-experimental & non experimental
quasi-experimental ; experimental & non experimental
non experimental ; quasi-experimental and experimental
depends on the topic of the study
9
what does MCID tell us?
if intervention produced statistically significant change
if outcome measure has statistical significance
if outcome measure is accurate representation of pt demographic
if intervention can be applied to all pts with same dx
10
attrition means
gain of researchers
loss of subjects
gain of subjects
loss of researchers
11
looks at differences within and between the groups and does not provide data on direct intervention outcomes
magnitude of treatment effect
statistical test of differences
intention to treat analysis
effect size
12
which of the following is NOT a potential consequence of subject attrition?
statistical power may be undermined
not a good representation of population of interest
funding for study is compromised
distribution may become unbalanced
13
calculate control group even rate based off chart
17 / (17+32) = .35
6 / (6+17) = .26
32 / (32+38) = .46
32 / (17+32) = .65
14
magnitude of difference between two group means when variation in scores is included in calculation
standardized effect size
absolute effect size
sample effect size
relative effect size
15
calculate experimental group event rate based off chart
17 / (6+17) = .74
6 / (6+38) = .14
17 / (17+32) = .35
6 / (6+17) = .26
16
what will the results of an intention to treat analysis reflect?
increase in effect size of treatment
reduction in effect size of treatment
no changes in effect size of treatment
fluctuating changes in effect size of treatment
17
which of the following research designs does NOT have a randomized group assignment?
quasi-experimental
all designs have randomized group assignments
nonexperimental
experimental
18
statistical analysis of data from subjects in the group they were assigned, despite noncompliance with study protocol
magnitude of treatment analysis
intention to treat analysis
statistical test of differences
statistical power analysis
19
what is a con of quasi-experimental and nonexperimental research designs?
they're harder to pronounce than "experimental"
pts tend to have more knowledge in these designs thus biasing them
researchers overestimate tx effects due to bias
researchers who conduct these studies have higher levels of bias
20
what research design can be MOST appropriate for determining the potential ineffectivness or harm from an intervention?
experimental
quasi experimental
non experimental
randomized control
21
what assignment method is MOST LIKELY to reduce bias?
quasi-intentional assignments
it is the personal responsibility of the researcher to avoid bias
randomization
intentional assignments
22
why do clinicians/outcome assessors need to be masked to group assignments?
avoids unconscious bias
necessary step for any study to be peer reviewed and published
clinicians will try to intentionally sabotage the experiment
automatically classifies the experiment as reliable and valid
23
what are some cons to conducting randomized clinical trials (experimental)?
may be unethical (tx alternative associated with high risk)
do not resemble everyday clincial practice
internal validity is often challenged
complex and expensive
24
calculate relative risk reduction based off the chart
(EER - CER) / EER = -1.5
(CER - EER) / CER = 0.60
1 / ARR = 4.76
ARR / (CER - EER) = 0
25
why is the magnitude of treatment effect more useful than statistical test of differences?
provides clinical application
takes more time than a statistical test of differences
requires a smaller sample size than statistical test of differencees
proves validity of study
26
which of the following are correct?
0.50 = moderate effect siz
0.80 = large effect size
0.20 = minimal effect size
0.40 = moderate effect size
27
calculate absolute risk reduction based off chart
(CER - EER) / CER = 0.60
EER - CER = -.21
CER - EER = .21
1/CER = 2.86
28
validity is best reflected by ____ and significance is best reflected by ____
sensitivity; specificity
magnitude of treatment effect; statistical test of differences
specificity; sensitivity
statistical test of differences; magnitude of treatment effect
29
which of the following are factors that may influence intervention selection for PTs and their pts/clients?
s/s fit an established classification scheme
resources required and their availability
complexity of case
prioritized problem list
