Risk Factor

Correlational Techniques

Biomedical research often seeks to establish if there is a relationship between two variables for example, is there a relationship between salt intake and blood pressure, or between cigarette smoking and life expectancy The methods used to do this are correlational techniques, which focus on the co-relatedness of the two variables. There arc two basic kinds of correlational techniques Correlation, which is used to establish and quantify the strength and direction of the relationship between two...