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.
It most often affects the lower legs, but can occur anywhere. In more severe cases, cellulitis can also be accompanied â and often preceded â by: a high temperature (fever) of 38C (100.4F) or above. vigorous shaking (rigors) nausea and vomiting. dizziness. confusion.