In simple linear regression a single independent variable is used to predict the value of a dependent variable. In multiple linear regression two or more independent variables are used to predict the value of a dependent variable. The difference between the two is the number of independent variables.
Watching for Systemic Symptoms. 1  1. Watch from swollen glands. Serious cases of cellulitis will spread beyond the initially infected region to become systemic and impact the rest of the body. 2  2. Notice if you experience fever and/or chills.
Be aware of the risk factors. Cellulitis is a skin infection that usually occurs on the lower legs or shins. It is caused by the spread of a bacterial infection, usually streptococcus or staphylococcus. There are several risk factors that make it more likely for these bacteria to find an entry point into your skin.