kin 232 - mod 3 observational research cohort and case-control studies part 2 (copy)
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Description and Tags
26 Terms
1
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false
if a ratio equals one there is many associations b/w exposure and event
2
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case-control studies
recruits participants based on disease status (diagnosis) to help control the number of cases within your population
3
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population based
_____________ recruitment recruits from all cases in population
4
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hospital-based
_______________ recruitment drawn from cases admitted and treated in a hospital
5
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selection bias
subjects studied are not representative of the target population about the conclusions drawn
6
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true
control selection and case selection must not be based on exposure history
\
t or f
\
t or f
7
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recall bias
type of info bias common in case-control studies where cases are more likely to recall prior exposure than controls
8
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non-differential missclassification
cases/controls are misclassified equally making detection of a true effect less likely
9
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differential misclassification
only one group is misclassified altering magnitude/direction of effect
10
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true
longitudinal case control studies are always retrospective
\
t or f
\
t or f
11
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true
cohort studies have good external validity
\
t or f
\
t or f
12
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true
cohort studies can measure many types of exposures and outcomes at once
13
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0\.205
17 people had lung cancer and 83 people did not among the smoking group
1 person had lung cancer and 99 did not among the non smoking group
\
what is the odds ratio for the exposed group
1 person had lung cancer and 99 did not among the non smoking group
\
what is the odds ratio for the exposed group
14
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0\.01
17 people had lung cancer and 83 people did not among the smoking group
1 person had lung cancer and 99 did not among the non smoking group
\
what is the odds ratio for the non exposed group
1 person had lung cancer and 99 did not among the non smoking group
\
what is the odds ratio for the non exposed group
15
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20\.5
17 people had lung cancer and 83 people did not among the smoking group
1 person had lung cancer and 99 did not among the non smoking group
\
what is the overall odds ratio
1 person had lung cancer and 99 did not among the non smoking group
\
what is the overall odds ratio
16
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17
17 people had lung cancer and 83 people did not among the smoking group
1 person had lung cancer and 99 did not among the non smoking group
\
what is the relative risk
1 person had lung cancer and 99 did not among the non smoking group
\
what is the relative risk
17
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17%
17 people had lung cancer and 83 people did not among the smoking group
1 person had lung cancer and 99 did not among the non smoking group
\
what is the absolute risk
1 person had lung cancer and 99 did not among the non smoking group
\
what is the absolute risk
18
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true
cross-sectional studies are often cheaper
\
t or f
\
t or f
19
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false
cross-sectional studies have an increased chance of attrition
\
t or f
\
t or f
20
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period effects
cross-sectional studies will control for ___________
21
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true
cross-sectional studies do not know if exposure precedes outcome
\
t or f
\
t or f
22
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false
cross-sectional studies have associations between variables that are easy to interpret
23
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true
longitudinal studies helps establish an order of events
\
t or f
\
t or f
24
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true
longitudinal studies can provide insight to casual mechanisms
\
t or f
\
t or f
25
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cohort effects
longitudinal studies can be affected by ______________
26
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false
longitudinal studies can be used to suggest causation and associations
\
t or f
\
t or f