application or intradermal injection of a substance to the skin to test the body's reaction to it. Such a test detects an animal's sensitivity to such allergens as dust and pollen, or to preparations of microorganisms believed to be the cause of a disorder.
A direct relationship graph is a graph where one variable either increases or decreases along with the other. The general equation for a direct relationship graph is y = mx + b, where y denotes the...
Causal network diagrams and flow charts are also often helpful to assess the cause and effect of relationships that appear in the data. (10) In order to analyze the data, the use of a computer-assisted qualitative data analysis program is suggested.