Term
| what questions should you ask in a study design check list |
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Definition
is the study relivent
does the study add anything new
what type of research question is beiing asked
was the study design appropirate
did the study methods address the most important potential sources of bias
was the study performed according to the origional protocol
does the study test a stated hypothesis
were the statistical analyses performed correctly
do the data justify the conclusions
are there any conflicts of interest |
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Term
| what are the two primary concerns for a study |
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Definition
is the study question relivant
does the study add anything new |
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Term
| what three things do you look at to see if a study is relivent |
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Definition
| correlation, association, causation |
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Term
| what is the relationship between correlation and association |
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Definition
| correlation does not imply association |
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Term
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Definition
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Term
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Definition
| the probability the test will reject the null hypothesis |
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Term
| list the steps in human study heirarchy begining at the bottom |
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Definition
| case report/study, controlled case study, cohort study, randomized study, practice guidelines, systematic review, meta analysis |
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Term
| what does a systematic review lack |
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Definition
| does not analyze the statistics |
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Term
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Definition
| people are put into two or more groups randomly and given different treatmet |
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Term
| what is a cross over study |
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Definition
| group gets a drug for some time then the next group does |
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Term
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Definition
| group a has a disease, group b does not |
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Term
| what is a controlled case study |
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Definition
| off labaled drug use on a patient |
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Term
| what studies have to do with raw data collection |
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Definition
| randomized, cohort, controlled case, case report |
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Term
| what studies have to do with reviews |
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Definition
| meta analysis, systematic review, practice guidelines |
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Term
| what studies are weighted by power |
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Definition
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Term
| what are the components of a descriptive study |
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Definition
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Term
| what is a descriptive study |
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Definition
| identifies characteristics of the group without collecting scientific data, a raw data collection |
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Term
| what are the types of descriptive studies |
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Definition
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Term
| what is an analytic study |
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Definition
| doing something with the data, gather data and check it, fact controlled |
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Term
| what are the types of analytic studies |
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Definition
| experimental and observational |
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Term
| what are the experimental studies |
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Definition
| randomized parallel group, randomized crossover |
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Term
| what are the observational studies |
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Definition
| cohort studies, cross sectional (analytic), case controlled |
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Term
| what studies have to do with correlation |
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Definition
| descriptive and ovservational (analytic branch) |
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Term
| what studies have to do with causation |
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Definition
| analytical branch experimental |
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Term
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Definition
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Term
| what is a null hypothesis |
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Definition
| what are the chances your wrong, x does not do y |
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Term
| what type of data in regards to a hypothesis is suspicious |
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Definition
| data irrelivent to the hypothesis |
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Term
| name the 14 steps of experimental design |
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Definition
1. select a problem
2. determine the dependent variables
3. determine the independent variable
4. determine the number of levels of independent variables
5. determine the possible combinations
6. determine the number of observations
7. redesign if necessary
8. randomize participants
9. meet ethical and legal requirements
10. mathematical model
11. data collection
12. data reduction
13. data verification (outliers)
14. data interpertation |
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Term
| what is a dependent variable |
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Definition
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Term
| what is the independent variable |
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Definition
| not manipulated in the experiment |
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Term
| what are examples of independent variables |
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Definition
| age, sex, vision, education, work experience |
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Term
| what is the first experiment design called |
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Definition
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Term
| what can bias cause in regards to chance |
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Definition
| sampline errors, random error |
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Term
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Definition
| reduces percision, error multiplies every time you make one not adds |
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Term
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Definition
| can bias results one way or another |
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Term
| what are the systematic errors caused by bias |
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Definition
| choice of participants, which data to collect, conformity of bias (twisting data), technological |
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Term
| what are examples of sampling bias |
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Definition
| socioecnomic bias, genetic bias, age bias, nutritional bias, sex bias, disease bias |
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Term
| what is data collection bias |
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Definition
| only collecting supporting data, equipment not capable of collecting differences |
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Term
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Definition
| interviewer bias (non verbal cues), subject bias (norality, please interviewer) |
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Term
| what is the relationship between effect and sample size |
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Definition
| the bigger the effect, the less you have to sample |
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Term
| what is the correlation between sample size and power |
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Definition
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