Intervention within PICO

Question 1

Interventions are designed to answer relational or experimental questions

Answer 1

To answer relational questions, such as what is the impact of X on Y, researchers intervene in practices.
>. These are framed as experiments.
>. Relational questions establish whether change in one variable is associated with change in another variable
>. Experimental questions test whether one variable causes a change in another variable.

Question 2

Variables

Answer 2

> . are factors that have influence;
. vary in both value and intensity;
. can be counted or measured; and
. may be in the form of numbers or non-numerical characteristics.

Question 3

Independent & dependent variables

Answer 3

> . Independent variables have an affect on dependent variables.
. A dependent variable is affected by the independent variable.
. The researcher is usually focused on the dependent variable.

Question 4

Confounding variables are:

Answer 4

> . Variables that could affect the variables being studied; but
. are not actually measured in the study.

Question 5

A null hypothesis

Answer 5

> . Tests the relationship between independent & dependent variables;
. Means that one variable has no impact on the other; and
. Is discounted if one variable does impact the other

Question 6

Confidence interval (CI) & Margin of error (MoE)

Answer 6

> . A Confidence interval is the estimate of how accurately the sample population reflects total population (N).
. This is described as a range of values (e.g. 95%)
The margin of error is how far from the sample estimate the true mean value might be (+/-)
. t-test, p-value