1.Systematic review is a comprehensive identification and synthesis of the available studies on a specified topic and it ispreferable that these studies have:

Same study design

Same sample size

Same population

Same source in terms of database.

2.Statements below are all incorrect except two; please identify the TWO CORRECT statements;Two answersare required.

	Non-parametric tests can be used to analyseordinal, interval and ratio variables.
	Ideally, in order to assess statistical significance both p value and 95% CI (if available) should 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 already collected data.
	Systematic review is reviewing a study or a research paper very systematically.
	The suitable measure of association/effect for a cohort study is odds ratio while for a case control study it is relative risk.
	Choosing 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.

3.Should a systematic review only include those studies that show association between the exposure and outcome of interest?

	No, otherwise overall summary measure of effect will not be accurate.
	Yes, because otherwise overall summary measure of effect will be inaccurate.
	Yes, because studies that show no association are not really important.
	No, because then it is not possible to calculate overall measure of effect