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Question: foundations of biostatistics and epidemiology 1 two answers required power...

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FOUNDATIONS OF BIOSTATISTICS AND EPIDEMIOLOGY

              1. (Two answers required) Power of a study is:

 

 

The ability to find the difference between comparison groups if it exists in the population reflected by the sample.
 

Power is all about the effects of steroids on muscle mass.
 

The ability to find the association between variables if it exists in the population reflected by the sample.
 

The inability to find the difference between comparison groups if it exists in the population reflected by the sample.
 

The inability to find the difference between comparison groups if it exists in the population reflected by the sample.

      2. Following statements are all incorrect except TWO; please identify the two correct statements; Two answers are required.

 
 

Non-parametric tests can be used to analyse ordinal, interval and ratio variables.
 

In order to assess statistical significance both p value and 95% CI (if available) should ideally be taken into account.
 

The difference between Primary and Secondary research is that secondary research generates new data from study participants whereas primary research uses data that had already been collected.
 

Systematic review is reviewing a study or a research paper very systematically.
 

The suitable measure of association for a cohort study is odds ratio while for a case control study it is relative risk.
 

Choice of a correct test for data analyses does not depend on research purpose, measurement scale of the dependent variable and number of groups involved.
 

Informing potential research participants of all possible risks and benefits is essential for Informed Consent and is an optional moral duty of a researcher.

 

NEED IT ASAPP....

 

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