WHAT ARE CONFOUNDING VARIABLES?
Confounding variable The variables that correlate in a positive or in a negative manner with both the dependent variable and the independent variable are confounding variables or confounders. An external variable whose presence causes an effect in the variables which are being studied so that the results do not reflect the actual relationship between the variables under study is what we call a confounder. When no true association exists amidst them, confounding factors can mask the actual relationship between, or elaborates a supposed relationship falsely between the experiment and outcome. Effect of Confounding Variables During a research, until and unless some appropriate methods are employed to adjust the confounders, the existence of confounding variables makes it hard to study a research in order to make a clear-precise connection amid experiment and outcomes. Therefore, an individual has to reassure that all the confounding variables have been identified...